NCT GROUP INC
S-1/A, EX-10, 2000-12-13
MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES
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Exhibit 10(ao)
                                                                      Annex III

                                LICENSE AGREEMENT

     License Agreement made this 12th day of September,  2000 by and between Pro
Tech Communications,  Inc., a corporation  organized under the laws of the state
of Florida,  with offices at 3311 Industrial 25th Street,  Fort Pierce,  Florida
34946  ("Licensee"  or "Pro Tech") and NCT Hearing  Products,  Inc.,  a Delaware
corporation with offices at 20 Ketchum Street, Westport, Connecticut 06880 ("NCT
Hearing").

     WHEREAS,  Licensee is engaged in the design,  development,  manufacture and
marketing of telephone headsets for various markets around the world; and

     WHEREAS,  NCT  Hearing is a wholly  owned  subsidiary  of NCT  Group,  Inc.
("NCT"),  a Delaware  corporation,  and is engaged in the  development of active
noise cancellation and speech enhancement technologies that have been applied to
various  fields and  industries,  and is owner or a direct  licensee from NCT of
certain  United  States and foreign  patents  and  copyrights  covering  various
aspects of these  technologies  which  both  parties  believe  can be applied to
products manufactured and sold by Licensee; and

     WHEREAS,  Licensee is desirous of obtaining  an exclusive  license from NCT
Hearing to make,  use,  develop and sell telephone  headsets  incorporating  NCT
Hearing technologies for telephony, multimedia and cellular headset markets.

     NOW THEREFORE,  in consideration of the mutual covenants  contained herein,
as well as other good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the parties agree as follows:



                             ARTICLE 1. DEFINITIONS
As used herein, the terms described below have the following meanings.

1.1   "Affiliate"  shall  mean any  Person  which  directly  or  indirectly,  is
      controlled  by, is in control of, or under common  control with the Person
      with  reference  to which the term  "Affiliate"  is used.  As used in this
      definition, "control", including the terms "controlling",  "controlled by"
      and "under common control with", with respect to the relationship  between
      or among two or more Persons, means the possession, directly or indirectly
      or as trustee or executor,  of the power to direct or cause the  direction
      of the affairs or management of a Person, whether through the ownership of
      voting  securities,  as trustee or  executor,  by contract  or  otherwise,
      including,  without limitation, the ownership,  directly or indirectly, of
      securities  having the power to elect a majority of the board of directors
      or similar body governing the affairs of such Person.

1.2   "Confidential Information" shall mean the information described in Article
      5 below  and  shall  include  the  Deliverables  and any and all  samples,
      models,  prototypes,  drawings,   specifications,   formulas,  algorithms,
      software,  operating  techniques,  processes,  data,  technical  and other
      information,  including any information relating to the status of research
      or other investigations being conducted, whether given in writing, orally,
      or in magnetic or other electronic processing form to the extent that such
      information  is not in the public  domain  through  other than a breach of
      this Agreement.

1.3   "Deliverables"  shall  mean the  models,  specifications,  codes and other
      documentation and materials described on Schedule A hereto to be delivered
      by NCT Hearing to Licensee under Section 4.3 of this Agreement.

1.4   "Know-how", in general, will have its usual and accepted meaning, that is,
      inter alia, all factual  knowledge and information not capable of precise,
      separate  description  but which,  in an  accumulated  form,  after  being
      acquired as the result of trial and error,  gives to the one  acquiring it
      an ability to produce and market  something  which one otherwise would not
      have known how to produce and market with the same  accuracy or  precision
      necessary for commercial success.

1.5   "Licensed  Patents" shall mean all those patents relating to the reduction
      of noise and  enhancement of speech by electronic  means in headsets owned
      by NCT Hearing and listed on Schedule B hereto together with those patents
      issued under patent  applications filed relating to the reduction of noise
      and enhancement of speech by electronic  means in headsets and also listed
      on Schedule B hereto including any  continuations,  continuations-in-part,
      divisions, extensions, reissues, re-examinations or renewals of any of the
      foregoing.

1.6   "Licensed  Products" shall mean exclusively  those  lightweight,  portable
      headsets,  and  related  accessories  to such  headsets,  which  embody or
      employs  all  or  part  of  the  Licensed   Patents  and/or  the  Licensed
      Technology.

1.7   "Licensed  Technology" shall mean that unpatented  technology  relating to
      the reduction of noise and  enhancement  of speech by electronic  means in
      headsets  owned by or licensed to NCT Hearing and  described on Schedule C
      hereto.

1.8   "Market"  shall mean the  worldwide  market  for  Licensed  Products  used
      exclusively in the telephony, cellular and multimedia fields.

1.9   "NCT Hearing Technology" shall mean any and all existing technology, other
      than Sponsor Technology,  relating to the attenuation,  isolation, control
      and/or  cancellation of noise and/or signals,  now or hereinafter owned or
      licensed  by or to NCT  Hearing  and/or its  Subsidiaries  or  affiliates,
      including  without  limitation  all  know-how,  trade  secrets,   methods,
      operating  techniques,  processes,  software,  materials,  technical data,
      engineering information, formulas, specifications, drawings, machinery and
      apparatus, patents, patent applications, copyrights and other intellectual
      property relating thereto.

1.10  "NCT Hearing  Technology  License"  shall mean the license to the Licensed
      Patents  and the  Licensed  Technology  granted by NCT Hearing to Licensee
      under Article 2 of this Agreement.

1.11  "Person"  shall  mean  any  individual,  partnership,  firm,  corporation,
      limited   liability   company,   joint   venture,   association,    trust,
      unincorporated  organization or other entity,  as well as any syndicate or
      group that would be deemed to be a person  under  Section  13(d)(3) of the
      Securities Exchange Act of 1934, as amended.

1.12  "Sponsor  Technology"  shall mean with  respect to a party  hereto (i) all
      existing  technology  owned  or  licensed  by or  to a  party  and/or  its
      Affiliates  which,  by virtue of  contract  restrictions  binding  on such
      party,  cannot be disclosed or  transferred to the other party on the same
      terms and conditions as NCT Hearing Technology or Licensee Technology,  as
      the case may be; and (ii) all existing  technology  which results from the
      combination of a party's  technology and a third party's  technology,  and
      which by virtue of contract restrictions binding on the party in question,
      cannot be  disclosed or  transferred  to the other party on the same terms
      and conditions as NCT Hearing  Technology or Licensee  Technology,  as the
      case may be.

1.13  "Technical  Information" shall mean technical,  design,  engineering,  and
      manufacturing information and data pertaining to the design,  manufacture,
      commercial production and distribution of Licensed Products in the form of
      designs,   prints,  plans,  material  lists,   drawings,   specifications,
      instructions, reports, records, manuals, other written materials, computer
      programs and software and other forms or media relating thereto.



                               ARTICLE 2. LICENSES
2.1   The NCT  Hearing  Technology  License - License to  Licensed  Patents  and
      Licensed  Technology.   Subject  to  the  terms  and  conditions  of  this
      Agreement,  NCT Hearing hereby grants to Licensee a license to make,  use,
      distribute, sell and/or have sold Licensed Products solely in the Market.

2.2   Exclusivity.  The NCT Hearing  Technology  License  shall be  exclusive as
      against all others for the manufacture,  use and sale of Licensed Products
      solely in the Market.

2.3   Assignment and Sublicensing. The rights and licenses granted hereunder may
      not  be  sublicensed,  conveyed,  assigned  or  otherwise  transferred  by
      Licensee to any third party without NCT Hearing's prior written consent in
      each instance. In addition, Licensee shall have the right to have Licensed
      Products  manufactured  for it by  others  but only  after  obtaining  NCT
      Hearing's  prior written consent and only under  nondisclosure  agreements
      implemented in accordance with the provisions of Articles 4 and 5 hereof.

2.4   Acceptance.  Licensee  hereby (i) accepts the rights under the NCT Hearing
      Technology  License granted to it by NCT Hearing under this Article 2, and
      (ii) acknowledges that the rights that NCT Hearing has granted to Licensee
      hereunder are exclusive and limited to the manufacture,  use, distribution
      and sale of Licensed Products in the Market subject to the limitations set
      forth herein.

2.5   Patent and Copyright  Notices.  Licensee shall mark each Licensed  Product
      sold,  leased,  distributed or otherwise  transferred  and shall cause all
      licenses, contracts and agreements with other parties for the sale, lease,
      distribution,  use or other  disposition of Licensed Products to contain a
      provision requiring,  if feasible in Licensee's  reasonable opinion,  such
      other  parties  to mark  each  Licensed  Product  with a  suitable  legend
      identifying  the  Licensed  Patents  and  Licensed   Technology  with  the
      appropriate  patent  or  copyright  notice,  as the  case may be.  If,  in
      Licensee's reasonable opinion, the Licensed Product is too small to have a
      legend placed on it,  Licensee will use all  reasonable  efforts to have a
      legend placed on the software and/or  packaging  accompanying the Licensed
      Product.

2.6   Product  Marking.  Licensee shall  prominently  mark each Licensed Product
      sold,  leased,  distributed or otherwise  transferred  and shall cause all
      licenses, contracts and agreements with other parties for the sale, lease,
      distribution,  use or other  disposition of Licensed Products to contain a
      provision requiring,  if feasible in Licensee's  reasonable opinion,  such
      other parties to  prominently  mark each Licensed  Product with a suitable
      legend   identifying  the  Licensed  Product  as  being  a  product  which
      incorporates  NCT  Hearing's  technology  for the  reduction  of  noise by
      electronic means and including the words:  "with NCT Hearing  Technology".
      If, in Licensee's reasonable opinion, the Licensed Product is too small to
      have such a legend placed on it, Licensee will use all reasonable  efforts
      to have such a legend placed on the software and/or packaging accompanying
      the Licensed Product.

                          ARTICLE 3. FEES AND ROYALTIES
3.1   Fees.  Licensee  shall issue to NCT Hearing  Twenty  Three  Million  Seven
      Hundred Two Thousand  Seven  Hundred Fifty  (23,702,750)  shares of common
      stock  of the  Licensee  as a  non-refundable  up-front  license  fee upon
      execution of this Agreement.

3.2   Unit royalties.  Should NCT Hearing's equity interest in all of the issued
      and  outstanding  capital  stock of  Licensee  (as  determined  on a fully
      diluted  basis) fall below fifty and one tenth percent  (50.1%),  Licensee
      shall  promptly  thereafter  commence  payment to NCT Hearing of a royalty
      with respect to each Licensed  Product (which term for purposes of royalty
      calculations shall not include prototypes or engineering samples furnished
      without consideration to unaffiliated customers) sold, leased, distributed
      or otherwise  transferred by Licensee,  any  sublicensee  permitted  under
      Section 2.3 above or otherwise as follows:

            6% of Pro Tech's Sale Price for each Unit sold, leased,  distributed
            or otherwise transferred.

            For purposes of the foregoing royalty calculations "Unit" shall mean
      one (1) Licensed Product, and "Pro Tech's Sale Price" shall mean the gross
      invoice price to the purchaser or other transferee before the deduction of
      any discounts, rebates or set-offs but not including amounts to be paid by
      the purchaser,  lessee or other transferee for transportation,  packing or
      insurance;  excise,  sales,  V.A.T. or other taxes not based on income; or
      customs, duties, fees, commissions or other customs expenses. In the event
      that any  purchaser,  lessee or other  transferee  returns to Pro Tech any
      Unit sold, leased, distributed or otherwise transferred to such purchaser,
      lessee  or other  transferee  by Pro Tech  either  because  such  Unit was
      defective or otherwise, NCT Hearing will credit the account of Pro Tech in
      the amount of any royalty paid or payable  hereunder  with respect to such
      Unit. Such credit shall be applied to the immediately  succeeding calendar
      quarter after Pro Tech advises NCT Hearing in writing of such return(s).


3.3   Payment.  Unit royalties  shall be paid to NCT Hearing  within  forty-five
      (45) days from the last day of each calendar quarter of each calendar year
      as provided in Article 7. Licensee agrees that NCT Hearing may inspect its
      royalty/revenue  records once a year upon thirty (30) days notice,  at NCT
      Hearing's own expense,  including computer generated or computer compelled
      information as to Units of Licensed Products sold, leased,  distributed or
      otherwise  transferred and Units of Licensed Products  manufactured and/or
      held in inventory, as well as extant invoices, inventory records, shipment
      documents and similar  information  and material  reasonably  necessary to
      confirm or verify the Unit royalties due hereunder.

                      ARTICLE 4. DISCLOSURE OF INFORMATION,
                                DATA AND KNOW-HOW

4.1   Disclosure.  The parties  shall  disclose  to each other such  appropriate
      Technical  Information  as may be reasonably  required to  accomplish  the
      purposes of this  Agreement.  It is agreed,  however,  that neither  party
      shall be obligated to disclose  information,  the  disclosure of which has
      been restricted by a third party.

4.2   Treatment.  All  disclosed  Technical  Information  which is  Confidential
      Information (as defined in Article 5 below) shall be kept  confidential by
      the receiving party in accordance with the further provisions of Article 5
      below and will remain the  property of the  disclosing  party.  Any source
      code  disclosed by NCT Hearing shall also be subject to the  provisions of
      NCT Hearing's form of Source Code Delivery  Agreement,  a copy of which is
      attached as Schedule D hereto.

4.3   Deliverables.  NCT Hearing shall deliver the  Deliverables to Licensee and
      in accordance with the delivery dates set forth on Schedule A hereto.

                           ARTICLE 5. CONFIDENTIALITY

5.1   Definitions.   Each  party   possesses   and  will   continue  to  possess
      confidential information relating to its business and technology which has
      substantial commercial and scientific value in the business in which it is
      engaged ("Confidential Information"). Subject to Section 5.4, Confidential
      Information  includes,  but is not  limited  to:  Deliverables,  Technical
      Information,  trade  secrets,  processes,  formulas,  data  and  know-how,
      discoveries,  developments, designs, improvements, inventions, techniques,
      marketing   plans,   strategies,   forecasts,   new   products,   software
      documentation,  unpublished  financial statements,  budgets,  projections,
      licenses,  prices,  costs,  customer  lists,  supplier lists and any other
      material marked "Confidential  Information",  "Proprietary Information" or
      in some  other  reasonable  manner to  indicate  it is  confidential.  Any
      Confidential  Information  disclosed  between the parties hereto orally or
      visually, in order to be subject to this Agreement, shall be so identified
      to the  receiving  party  at the time of  disclosure  and  confirmed  in a
      written  summary  appropriately  marked as herein provided within ten (10)
      days after such oral or visual disclosure.



5.2   Treatment.  Each party shall during the term of this  Agreement  and for a
      period of five (5) years  thereafter,  hold in confidence and not disclose
      to third parties except as  specifically  permitted under this Section 5.2
      and Section 5.4 below any and all  Confidential  Information  of the other
      party disclosed directly or indirectly to it by the other party.



      Each party shall take the following minimum safeguards with respect to the
      Confidential Information of the other party:


      (a)   only those of its  employees  who need to receive the other  party's
            Confidential  Information in order to carry out the purposes of this
            Agreement  shall have  access to such  information  and such  access
            shall be limited to only so much of such information as is necessary
            for  the  particular   employee  to  properly  perform  his  or  her
            functions;

      (b)   all  documents,  drawings,  writings  and  other  embodiments  which
            contain  Confidential  Information  of  the  other  party  shall  be
            maintained  in a prudent  manner in a secure  fashion  separate  and
            apart from other  information in its possession and shall be removed
            therefrom  only  as  needed  to  carry  out  the  purposes  of  this
            Agreement;

      (c)   all  documents,   drawings,   writings  and  other   embodiments  of
            information  the  security  or  safekeeping  of which are subject to
            governmental  regulations  shall be kept in  accordance  with  those
            regulations;

      (d)   all employees and contractors who shall have access to Confidential
            Information of the other  party  shall be under  written  obligation
            to it:  (i) to hold in confidence and not disclose  all Confidential
            Information  made   available  to   them  in  the  course  of  their
            employment;  (ii) to use such  Confidential  Information only in the
            course of performing  their employment  duties;  and (iii) to assign
            to their employer or  the  party  retaining  them all  inventions or
            improvements relating to their  employer's  business  and  conceived
            while  in  their  employer's  employ  unless   such  assignment   is
            prohibited by applicable law.

      Notwithstanding the foregoing, a party receiving Confidential  Information
      of the  other  party  may  disclose  Confidential  Information  (a) in any
      proceeding  under  Article 12 hereof,  to the extent such  information  is
      relevant  to the  dispute  between  the  parties  hereto  and  appropriate
      protective  order  has been  entered  in such  proceeding  topreserve  the
      secrecy of the Confidential Information, and (b) to its subcontractors and
      material and component suppliers so much of such Confidential  Information
      as is necessary to enable such party to perform its duties and obligations
      related to the  accomplishment of the purposes of this Agreement  provided
      that such  subcontractors  and  suppliers  are  obligated to such party in
      writing: (i) to hold in confidence and not disclose such information;  and
      (ii) not to use such information except as authorized by such party.
      In no event  shall the party  receiving  Confidential  Information  of the
      other party disassemble, reverse engineer, re-engineer, redesign, decrypt,
      decipher,  reconstruct,   re-orient,  modify  or  alter  any  Confidential
      Information  of the  disclosing  party or any circuit  design,  algorithm,
      logic or program code in any of the disclosing party's products, models or
      prototypes  which contain  Confidential  Information or attempt any of the
      foregoing  without first obtaining written consent of the disclosing party
      in each instance.

5.3   Return.  All  documents,  drawings,  writings and other  embodiments  of a
      party's Confidential  Information,  as well as those produced,  created or
      derived  from  the  disclosing  party's  Confidential   Information  which
      incorporate the disclosing party's Confidential Information and all copies
      thereof  shall be  returned  promptly  to it by the other  party  upon the
      termination of this Agreement  provided that the parties shall continue to
      be bound by the provisions of Section 5.2 above.

5.4   Exclusions.  Confidential Information shall not include information that:

     (a)  was at the time of disclosure in the public domain through no fault of
          the party receiving it;

     (b)  becomes  part of the  public  domain  after  disclosure  to the  party
          receiving it through no fault of such party;

     (c)  was in the  possession  of the party  receiving  it (as  evidenced  by
          written  records)  at the  time of  disclosure  and  was not  acquired
          directly or indirectly  from the other party, or a third party, as the
          case may be, under a continuing  obligation of confidence of which the
          party receiving it was aware;

     (d)  was  received  by the party  receiving  it (as  evidenced  by  written
          records) after the time of disclosure hereunder from a third party who
          did not require it to be held in confidence and who did not acquire it
          directly  or  indirectly  from  the  other  party  under a  continuing
          obligation of confidence of which the party receiving it was aware;

     (e)  required by law, governmental regulations, court order or the rules of
          any  relevant  securities  exchange to be  disclosed,  but only to the
          extent of such required disclosure; provided, that a party required to
          so disclose Confidential  Information shall use best efforts to notify
          the other party of such  potential  disclosure  so that such party may
          seek a protective  order or other  remedies to maintain in  confidence
          any such Confidential Information;

     (f)  was developed independently by the receiving party and without the use
          of any  Confidential  Information  received from the disclosing  party
          under this Agreement; or

     (g)  was or is disclosed by the party  owning it to third  parties  without
          restrictions  on use  or  disclosure  comparable  to  those  contained
          herein.

                  ARTICLE 6. DISCOVERIES AND DUAL IMPROVEMENTS
6.1   Joint Discoveries;  Dual  Improvements.  In the event that Licensee on the
      one hand,  and NCT  Hearing  and/or  NCT on the other,  jointly  discover,
      develop  or  create  any  intellectual   property  whether  patentable  or
      non-patentable,  all  rights  and  interest  in and to  such  intellectual
      property shall be owned equally by Licensee and NCT Hearing and each party
      hereby  grants to the  other a royalty  free,  fully  paid up,  perpetual,
      irrevocable  license to use and  exploit  any such  intellectual  property
      anywhere in the world.

6.2   Individual Discoveries. In the event that either Licensee on the one hand,
      or NCT Hearing and/or NCT on the other, independently discover, develop or
      create any intellectual property whether patentable or non-patentable, all
      right,  title and interest in and to such  intellectual  property shall be
      owned by the party discovering, developing or creating the same.

6.3   Further  Assurances.  The parties shall take all action legally  permitted
      that may be necessary or  appropriate to insure full  compliance  with the
      provisions of this Article 6  notwithstanding  the fact that  intellectual
      property covered by this Article 6 may be discovered, developed or created
      by an employee or independent contractor of one of the parties hereto.

                    ARTICLE 7. PAYMENTS, REPORTS AND RECORDS
Royalties,  if applicable as defined in Section 3.2, shall be due and payable in
U.S.  dollars in immediately  available funds within  forty-five (45) days after
the last business day of each calendar  quarter of each calendar year during the
term of this  Agreement.  Royalties  may be paid by wire  transfer to an account
designated by NCT Hearing or by certified  check delivered to NCT Hearing on the
date such Royalties are due. Late payments of Royalty shall bear interest on the
unpaid amount at the annual rate of twelve  percent (12%)  compounded  quarterly
until fully paid. If requested by NCT Hearing,  the Chief  Financial  Officer or
another  authorized  officer of the  Licensee  shall  provide NCT Hearing with a
certified  written royalty report (the "Royalty  Report") for each of Licensee's
fiscal years (or portions thereof) during the term of this Agreement,  for which
royalties  were due to NCT  Hearing,  within  sixty (60) days of the end of each
calendar  year of this  Agreement.  Such  Royalty  Reports  shall be prepared in
accordance with generally accepted accounting principles applied in a consistent
manner.  A similar Royalty Report shall be rendered and Royalty payment shall be
made within sixty (60) days after termination of this Agreement, provided, that,
royalties were payable to NCT Hearing during the term of this Agreement.

                                 ARTICLE 8. TERM
The term of this Agreement  shall begin on the date hereof and,  unless extended
or earlier  terminated by the written agreement of the parties or the provisions
of Article 9 below,  shall expire  immediately upon either:  (i) with respect to
rights granted under any patent  hereunder,  the expiration of that patent under
applicable law; or (ii) with respect to the other rights granted hereunder, upon
the expiration of the last to expire of the patents licensed hereunder.

                             ARTICLE 9. TERMINATION
9.1   General.  This  Agreement may be  terminated  prior to the end of the term
      provided in Article 8 above under any of the following  provisions of this
      Article.

9.2   Breach.  In the  event of a  material  breach  of this  Agreement,  if the
      defaulting  party fails to cure the breach within thirty (30) days, in the
      case of a breach involving non-payment of amounts to be paid hereunder, or
      sixty  (60)  days,  in the  case of any  other  kind of  material  breach,
      following  its  receipt of written  notice from the  non-defaulting  party
      specifying the nature of the breach and the corrective action to be taken,
      then the  non-defaulting  party may terminate this Agreement  forthwith by
      delivering  its  written  declaration  to the  defaulting  party that this
      Agreement is terminated.

9.3   Insolvency.  If one of the parties becomes bankrupt or insolvent, or files
      a petition  therefor,  or makes a general  assignment  for the  benefit of
      creditors,   or  otherwise  seeks   protection  under  any  bankruptcy  or
      insolvency  law, or upon the  appointment of a receiver of the assets of a
      party  ("defaulting  party")  then the other party shall have the right to
      immediately terminate this Agreement upon written notice to the defaulting
      party provided, in any such instance, that said right of termination shall
      be postponed for as long as the defaulting  party continues to conduct its
      business in the ordinary course.

9.4   Survival  of  Certain  Terms.  Notwithstanding  the  termination  of  this
      Agreement  under any of the  provisions  of this  Article 9, the terms and
      conditions  of Section 4.2 and Articles 5, 6, 7, 18, and 19 shall  survive
      termination  of this  Agreement and shall  continue to be  applicable  and
      govern the parties with respect to the subject matter thereof.

9.5   Document Return.  Each party shall return to the other party within thirty
      (30)  days of the  date of  termination  under  either  Article  8 or this
      Article 9 all of the Confidential  Information  received  pursuant to this
      Agreement  together  with  all  other  tangible  property  loaned  for the
      implementation of this Agreement.

                            ARTICLE 10. FORCE MAJEURE
In the  event  of  enforced  delay in the  performance  by  either  party of its
obligations  under  this  Agreement  due  to  unforeseeable  causes  beyond  its
reasonable  control  and  without its fault or  negligence,  including,  but not
limited to, acts of God, acts of the government, acts of the other party, fires,
floods,  strikes,  freight  embargoes,  unusually  severe weather,  or delays of
subcontractors  due to such causes (an "Event of Force  Majeure"),  the time for
performance of such obligations shall be extended for the period of the enforced
delay;  provided  that the party  seeking the benefit of the  provisions of this
paragraph  shall,  within ten (10) days after the beginning of any such enforced
delay,  have  first  notified  the other  party in  writing  of the  causes  and
requested  an extension  for the period of the enforced  delay and shall use all
reasonable endeavors to minimize the effects of any Event of Force Majeure.

                           ARTICLE 11. APPLICABLE LAW
The terms and conditions of this Agreement and the performance  thereof shall be
interpreted in accordance with and governed by the laws of the State of Delaware
and the United  States of America,  without  giving  effect to conflicts of laws
principles.


<PAGE>


                         ARTICLE 12. DISPUTE RESOLUTION
The parties agree to attempt in good faith to resolve any dispute arising out of
or in  connection  with the  performance,  operation or  interpretation  of this
Agreement  promptly  by  negotiation  between  the  authorized  contacts  of the
parties.



If a dispute should arise,  the authorized  contacts will meet at least once and
will attempt to resolve the matter.  Either  authorized  contact may request the
other to meet within fourteen (14) days, at a mutually agreed time and place. If
the matter has not been resolved within thirty (30) days of a request being made
for such a  meeting,  the  authorized  contacts  shall  refer the  matter to the
representatives  of the parties who are responsible for matters at the policy or
strategic  level  who shall  meet  within  fourteen  (14) days of the end of the
thirty (30) day period referred to above, at a mutually agreed time and place.



If the matter has not been  resolved  within thirty (30) days of a request being
made for this meeting, the parties shall proceed as follows:


(a)  Any action,  suit or proceeding  where the amount in  controversy  as to at
     least one party,  exclusive of the interest and costs,  exceeds one million
     dollars  (a  "Summary  Proceeding"),  arising  out of or  relating  to this
     Agreement  or  the  breach,  termination  or  validity  thereof,  shall  be
     litigated  exclusively  in the Superior Court of the State of Delaware (the
     "Delaware  Superior  Court")  as a  summary  proceeding  pursuant  to Rules
     124-131  of the  Delaware  Superior  Court,  or any  successor  rules  (the
     "Summary Proceeding Rules").  Each of the parties hereto hereby irrevocably
     and  unconditionally  (i)  submits  to the  jurisdiction  of  the  Delaware
     Superior Court for any Summary Proceeding,  (ii) agrees not to commence any
     Summary Proceeding except in the Delaware Superior Court, (iii) waives, and
     agrees not to plead or to make,  any  objection to the venue of any Summary
     Proceeding in the Delaware Superior Court,  (iv) waives,  and agrees not to
     plead or to make,  any claim  that any  Summary  Proceeding  brought in the
     Delaware  Superior  Court has been  brought  in an  improper  or  otherwise
     inconvenient  forum,  (v) waives,  and agrees not to plead or to make,  any
     claim that the Delaware Superior Court lacks personal jurisdiction over it,
     (vi)  waives  its right to remove any  Summary  Proceeding  to the  federal
     courts  except  where  such  courts  are  vested  with  sole and  exclusive
     jurisdiction by statute and (vii)  understands and agrees that it shall not
     seek a jury trial or punitive damages in any Summary  Proceeding based upon
     or arising out of or otherwise related to this Agreement and waives any and
     all rights to any such jury trial or to seek punitive damages.

(b)  In the event any action, suit or proceeding where the amount in controversy
     as to at least one party,  exclusive of interest and costs, does not exceed
     One Million  Dollars (a  "Proceeding"),  arising out of or relating to this
     Agreement or the breach,  termination or validity  thereof is brought,  the
     parties  to such  Proceeding  agree  to make  application  to the  Delaware
     Superior Court to proceed under the Summary  Proceeding  Rules.  Until such
     time as such application is rejected, such Proceeding shall be treated as a
     Summary  Proceeding  and all of the  foregoing  provisions  of this Article
     relating to Summary Proceedings shall apply to such Proceeding.

(c)  In the event a Summary  Proceeding  is not available to resolve any dispute
     hereunder,  the  controversy  or claim  shall  be  settled  by  arbitration
     conducted  on a  confidential  basis,  under the U.S.  Arbitration  Act, if
     applicable,  and the  then  current  Commercial  Arbitration  Rules  of the
     American  Arbitration  Association  ("Association")  strictly in accordance
     with the terms of this  Agreement and the  substantive  law of the State of
     Delaware.  The arbitration shall be conducted at the Association's regional
     office located  closest to Licensee's  principal place of business by three
     arbitrators,  at least one of whom shall be  knowledgeable  in active noise
     cancellation and speech  enhancement  technologies and one of whom shall be
     an  attorney.  Judgment  upon the  arbitrators'  award may be  entered  and
     enforced  in any  court of  competent  jurisdiction.  Neither  party  shall
     institute  a  proceeding  hereunder  unless at least  sixty (60) days prior
     thereto  such party shall have given  written  notice to the other party of
     its intent to do so. Neither party shall be precluded  hereby from securing
     equitable  remedies  in  courts  of any  jurisdiction,  including,  but not
     limited to,  temporary  restraining  orders and  preliminary  injunction to
     protect its rights and interests but such shall not be sought as a means to
     avoid or stay arbitration.

(d)  Licensee hereby designates and appoints CT Corporation  System with offices
     on the date  hereof at 1200 South Pine  Island  Road,  Plantation,  Florida
     33324 as its agent to  receive  service of  process  in any  Proceeding  or
     Summary Proceeding.  NCT Hearing hereby designates and appoints Corporation
     Service  Company  with  offices  on the date  hereof at 1013  Centre  Road,
     Wilmington,  DE 19805,  as its agent to receive such  service.  Each of the
     parties hereto further covenants and agrees that, so long as this Agreement
     shall be in effect,  each such party shall maintain a duly appointed  agent
     for the  service of  summonses  and other legal  processes  in the State of
     Delaware and will notify the other  parties  hereto of the name and address
     of such agent if it is no longer the entity identified in this article.


<PAGE>


                     ARTICLE 13. ANNOUNCEMENTS AND PUBLICITY
Except for any disclosure  which may be required by law,  including  appropriate
filings with the Securities and Exchange Commission and the Nasdaq Stock Market,
Inc., neither party may disclose the unit royalty terms set forth in Section 3.2
of this Agreement  without the consent of the other,  which consent shall not be
unreasonably withheld.  Upon the execution of this Agreement NCT Hearing and Pro
Tech each  intend  to issue a press  release  in NCT  Hearing's  and Pro  Tech's
customary  format and manner,  respectively,  reporting  the  execution  of this
Agreement  and its general  subject  matter  provided that each party shall have
received the other party's prior written  approval  thereof which approval shall
not be unreasonably withheld or delayed.

                            ARTICLE 14. SEVERABILITY
If any part of this  Agreement  for any  reason  shall be  declared  invalid  or
unenforceable,  such decision shall not affect the validity or enforceability of
any remaining  portion,  which shall remain in full force and effect;  provided,
however,  that in the event a part of this Agreement is declared invalid and the
invalidity or enforceability of such part has the effect of materially  altering
the obligations of any party under this Agreement,  the parties agree,  promptly
upon such  declaration  being  made,  to  negotiate  in good faith to amend this
Agreement  so as to put such  party in a position  substantially  similar to the
position such party was in prior to such declaration.

                  ARTICLE  15.  RIGHTS OF  ASSIGNMENT;  SUCCESSORS  AND  ASSIGNS
Neither NCT Hearing nor Licensee  shall have any right to assign this  Agreement
or any of their  respective  rights or  obligations  under this Agreement to any
third party except by operation of law or with the prior written  consent of the
other  party.  In the  event  Licensee  wishes to  assign  any of its  rights or
obligations  under this  Agreement to an Affiliate  of Licensee,  NCT  Hearing's
consent will not be  unreasonably  withheld.  In the event NCT Hearing wishes to
assign any of its rights or obligations  under this Agreement to an Affiliate of
NCT  Hearing,   Licensee's  consent  will  not  be  unreasonably  withheld.  The
provisions of this Agreement  shall inure to the benefit of, or be binding upon,
the successors and assigns of each party hereto.

                               ARTICLE 16. NOTICES
Any  notices  under  this  Agreement  shall be in  writing  and  shall be deemed
delivered on the date of delivery if delivered by personal  service,  or sent by
telecopy and confirmed by first class  registered or certified mail, or same day
or overnight  courier  service with postage or charges  prepaid and on the third
day following  dispatch if sent only by first class registered or certified mail
or same day or overnight courier service with postage or charges prepaid. Unless
subsequently  notified in writing in  accordance  with this Article by the other
party, any notice or  communication  hereunder shall be addressed to NCT Hearing
as follows:

                  NCT Hearing Products, Inc.
                  20 Ketchum Street
                  Westport, CT  06880
                  Attn: President
                  Fax No:  203-226-4447

to Licensee as follows:

                  Pro Tech Communications, Inc.,
                  3311 Industrial 25th Street
                  Fort Pierce, Florida 34946
                  Attn:  Rich Hennessey
                  Fax No.:  561-464-6644


                                ARTICLE 17. TAXES
Licensee  shall be  solely  responsible  for any  sales,  use,  occupational  or
privilege  taxes,   duties,  fees  or  other  similar  charges  imposed  by  any
governmental  authority  in  connection  with  the  manufacture,   sale,  lease,
distribution,  use or other  disposition by Licensee of Licensed Products or the
Licenses  granted  hereunder.  Any other taxes,  including income taxes based on
royalties and other payments to NCT Hearing,  shall be the responsibility of NCT
Hearing.
                           ARTICLE 18. INDEMNIFICATION
Each of NCT Hearing and Licensee agrees to indemnify,  defend, and hold harmless
the  other  party  and  each  of its  officers,  directors,  employees,  agents,
successors and assigns (hereinafter referred to in the aggregate in this Article
as  "the  Indemnified  Party")  against  any and all  losses,  claims,  damages,
liabilities,  costs  and  expenses  (including  without  limitation,  reasonable
attorneys'  fees and other  costs of defense of every  kind  whatsoever  and the
aggregate  amount of  reasonable  settlement of any suit,  claim or  proceeding)
which the  Indemnified  Party may incur or for which the  Indemnified  Party may
become liable on account of any suit, claim or proceeding purporting to be based
upon a failure to perform  obligations  under this  Agreement to be performed by
the other  party  (hereafter  the  "Indemnifying  Party") and its  employees  or
agents.  The Indemnified  Party shall promptly advise the Indemnifying  Party of
any such suit,  claim or proceeding and shall  cooperate  with the  Indemnifying
Party in the defense or settlement of such suit, claim or proceedings  providing
no settlement shall be made without the consent of the Indemnified  Party, which
consent shall not be unreasonably  withheld. In any event, the Indemnified Party
shall furnish to the Indemnifying Party such information  relating to such suit,
claim or proceeding as the Indemnifying  Party shall reasonably  request for use
in defending the same.

                       ARTICLE 19. MAINTENANCE AND DEFENSE
                         OF LICENSED PATENTS; WARRANTIES
19.1  Enforcement of Patents. Throughout the term of this Agreement, NCT Hearing
      may  maintain  in force  the  Licensed  Patents  in its sole and  absolute
      discretion.  In this connection,  NCT Hearing shall promptly pay all costs
      of  any   and   all   continuations,   continuations-in-part,   divisions,
      extensions,  reissues,   re-examinations,  or  renewals  of  the  Licensed
      Patents, including,  without limitation, the costs and expenses of any and
      all attorneys,  experts or other professionals  engaged in connection with
      any of the foregoing.

19.2  Infringement.  NCT Hearing shall defend and save harmless Licensee against
      any suit,  damage claim or demand,  and any actual  loss,  cost or expense
      (excluding opportunity costs or lost profits) suffered as a result thereof
      (including   reasonable  attorneys  fees),  based  on  actual  or  alleged
      infringement  of any  patent or  trademark  or any unfair  trade  practice
      resulting  exclusively  from the  exercise  or use of any right or license
      granted under this Agreement on the condition that Licensee:  (a) promptly
      notifies  NCT  Hearing of such  suit,  claim or  demand;  provided,  that,
      Licensee's  failure to promptly  notify NCT Hearing  shall not relieve NCT
      Hearing of its obligations  under this section except and to the extent it
      is actually  prejudiced by Licensee's  delay, and (b) provides NCT Hearing
      with such assistance as NCT Hearing may reasonably request for the defense
      or settlement of such suit, claim or demand.

            Notwithstanding  the foregoing,  NCT Hearing shall have no liability
            to defend or pay (a)  punitive  or  trebled  damages,  penalties  or
            fines,  and/or (b) damages or costs to Licensee  with respect to any
            claim of infringement  which is based on an implementation  designed
            or  modified by any third party or  Licensee's  use of the  Licensed
            Patents or the Licensed  Technology  for any purpose  other than the
            design,  manufacture,  use or sale of Licensed  Products pursuant to
            this Agreement.



19.3  Ownership; Authority. NCT Hearing represents and warrants to Licensee that
      it  owns  or has the  worldwide  right  to use,  including  the  right  to
      sublicense,  the  Licensed  Patents and Licensed  Technology.  NCT Hearing
      represents  and  warrants  that it has the right,  power and  authority to
      enter  into this  Agreement  and to grant the  licenses  and other  rights
      contained herein to Licensee as herein provided.

19.4  Non-Infringement. NCT Hearing represents and warrants to Licensee, that to
      the best of NCT Hearing's knowledge,  the Licensed Technology and Licensed
      Patents,  as  contemplated to be used with the Licensed  Products,  do not
      infringe upon any existing  patent,  copyright,  trademark,  service mark,
      trade name,  trade secret,  or other  intellectual  property  right of any
      third party.

19.5  No  Conflicts..  NCT  Hearing  represents,   warrants,  and  covenants  to
      Licensee,  that to the  best of NCT  Hearing's  knowledge,  NCT  Hearing's
      performance of this  Agreement does not conflict with any other  agreement
      to which such party is bound,  and while  performing this  Agreement,  NCT
      Hearing will not knowingly enter into any other agreement in conflict with
      this Agreement or which would impair the ability of NCT Hearing to perform
      its obligations under this Agreement.

                             ARTICLE 20. DISCLAIMER
EXCEPT AS SPECIFICALLY SET FORTH IN THIS AGREEMENT, NCT HEARING HEREBY DISCLAIMS
ANY EXPRESS OR IMPLIED WARRANTY OF THE ACCURACY,  RELIABILITY,  TECHNOLOGICAL OR
COMMERCIAL VALUE,  COMPREHENSIVENESS OR MERCHANTABILITY OF THE LICENSED PATENTS,
THE NCT HEARING  TECHNOLOGY,  OR THE LICENSED PRODUCTS,  OR THEIR SUITABILITY OR
FITNESS FOR ANY PURPOSE  WHATSOEVER.  NCT HEARING DISCLAIMS ALL OTHER WARRANTIES
OF WHATEVER NATURE,  EXPRESS OR IMPLIED. NCT HEARING DISCLAIMS ALL LIABILITY FOR
ANY  LOSS OR  DAMAGE  RESULTING,  DIRECTLY  OR  INDIRECTLY,  FROM THE USE OF THE
LICENSED PATENTS,  THE NCT HEARING TECHNOLOGY,  OR THE LICENSED PRODUCTS,  OTHER
THAN THOSE ARISING FROM CLAIMS OF INFRINGEMENT  OF INTELLECTUAL  PROPERTY RIGHTS
OF THIRD  PARTIES;  WITHOUT  LIMITING  THE  GENERALITY  OF THE  FOREGOING,  THIS
DISCLAIMER EMBRACES CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR GOODWILL, EXPENSES
FOR DOWNTIME OR FOR MAKING UP DOWNTIME, DAMAGES FOR WHICH LICENSEE MAY BE LIABLE
TO OTHER PERSONS, DAMAGES TO PROPERTY, AND INJURY TO OR DEATH OF ANY PERSONS.

                       ARTICLE 21. SCOPE OF THE AGREEMENT
This Agreement constitutes the entire agreement between the parties with respect
to the subject matter hereof and supersedes all prior oral or written agreements
or  understandings  of the parties with regard to the subject matter hereof.  No
interpretation,  change,  termination or waiver of any provision hereof shall be
binding  upon a party  unless in writing  and  executed by the other  party.  No
modification,  waiver, termination,  recession, discharge or cancellation of any
right or claim under this  Agreement  shall affect the right of any party hereto
to enforce any other claim or right hereunder.

IN WITNESS  THEREOF,  Licensee  and NCT Hearing  have  executed  this  Agreement
effective as of the date first written above.

PRO TECH COMMUNICATIONS, INC.             NCT HEARING PRODUCTS, INC.


By: /s/RICHARD HENNESSEY                  By:  /s/IRENE LEBOVICS

      Richard Hennessey                         Irene Lebovics
Title:      President                           Title:      President




<PAGE>


                                   Schedule A
Deliverables

Deliverables  include without limitation all know-how,  trade secrets,  methods,
operating   techniques,   processes,   software,   materials,   technical  data,
engineering  information,  formulas,  specifications,  drawings,  machinery  and
apparatus,  patents,  patent  applications,  copyrights  and other  intellectual
property relating thereto.

Any NCT  Hearing  source  codes  specified  above will only be  delivered  after
Licensee  has  signed  and  delivered  to NCT  Hearing  a Source  Code  Delivery
Agreement  substantially  in the form of Schedule D hereto  covering the subject
Deliverables.


<PAGE>


                        Schedule B

Licensed Patents


      Patents


HEADSETS

      Generics That Apply

    US            4,862,506 Issued August, 1989, entitled  "Monitoring,  Testing
                  and  Operator   Controlling  of  Active  Noise  and  Vibration
                  Cancellation  Systems". It describes a flexible user interface
                  for  maintenance  and operation of the  electronics  for noise
                  cancellation.  It is in use in the  MRI  headset  product  for
                  testing and maintenance.1

    US            5,105,377  Issued April 14, 1992,  entitled  "Digital  Virtual
                  Earth"(DVE).  A  digital  adaptive  feedback  control  system.
                  Instability  is prevented by use of a fixed  internal model of
                  the  physical  system.  This  approach  has  been  used  noise
                  canceling headsets industrial mufflers.2

    US            5,418,857 Issued May 23, 1995, entitled "Active Control System
                  for Noise  Shaping"..  The use of an active  control system to
                  control the quality of a sound  rather than just try to cancel
                  it.   Has   applications   for  sound   quality   control   in
                  automobiles.3

    US            5,440,642  Issued  August  8,  1995,  entitled  "Analog  Noise
                  Cancellation  System Using  Digital  Optimization  of Variable
                  Parameters"..  A digital  control system is used to adjust the
                  response of an analog noise cancellation system and to control
                  tonal  components of the noise.  Has application to active ear
                  defenders.4

    US 5,481,615  Issued  Jan 2, 1996, entitled "Improved  Audio  Reproduction
                  System". The use of a combination of active noise control and
                  adaptive   equalization  to  improve  an  audio  system.  This
                  has particular use in headsets for hi-fi and for
                  telecommunications.

    US 5,652,799  Issued  July 29,  1997,  entitled  "Noise  Reducing System".
                  A control system for selectively reducing tonal noise without
                  the  use  of  reference  signal  or  tachometer  signal. Has
                  application  to active  headsets where speech or other signals
                  must not be canceled.6



HEADSETS

      Application Specific

    US 4,654,871  Issued  March  31,  1987,   entitled  "Method  and Apparatus
                  for Reducing  Repetitive Noise Entering the Ear". It provides
                  for open-backed  headsets  wherein a repetitive noise signal
                  detected by a  microphone  at the headset is nulled by  the
                  headphone  diaphragm  in  an  adaptive  manner.  A similar
                  approach  to  provide  a  noise-free   zone  at  a  seat,   is
                  described.7

    US  4,701,952 Issued May 26, 1987, entitled "Frequency Attenuation
                  Compensated  Pneumatic  Headphone and Liquid Tube Audio System
                  for Medical Use". Describes a system for delivering music into
                  a passive headset for MRI patients.
                  Reissued April 27, 1993 as Re. 34,236.

    GB 2,172,769  Issued  July 6,  1988,  entitled  "Improvements  in
                  Acoustic  Attenuation".  An analog  active  headset  utilizing
                  feedforward control.

    GB 2,160,070  Entitled  "Sound  Reproduction  System".  An analog
                  active headset with a communications  input. The communication
                  signal is equalized  and mixed with the input and/or output of
                  the  feedback  control  loop.  Used in current  communications
                  headsets.

    GB 2,172,470  Issued  January 11,  1989,  entitled  "Improvements
                  Relating to Noise  Reduction  Arrangements".  An analog active
                  headset  in which a second  microphone  is used to adjust  the
                  feedback gain automatically so as to prevent instability.

    EP 0,212,840  Issued October 23, 1991,  entitled "Noise Reduction
                  Device".  An analog active  headset in which the feedback gain
                  is automatically  adjusted.  The adjustment may performed by a
                  digital controller.

    EP 0,232,096  Entitled "Acoustic Transducer". A closed-back headset in which
                  the ear cup is vented to improve low frequency performance.

    EP 0,192,379  Entitled  "Improvements  Relating to Noise Reduction
                  Arrangements"..  A  closed-back  active  headset  that uses an
                  additional loudspeaker connected to the headset by a tube. The
                  tube acts as an acoustic low pass filter that  prevents  noise
                  caused by any non-linear  distortions of the loudspeaker  from
                  reaching the ear.

    US 4,953,217  Issued August 28, 1990,  entitled "Noise  Reduction
                  System".  An analog  active  headset that includes a device to
                  reduce the effect of low frequency sound buffeting.

    US 5,452,361  Issued  September 19, 1995,  entitled  "Reduced VLF
                  Overload  Susceptibility Active Noise Cancellation  Headset"..
                  In an analog feedback headset,  an extra microphone is used to
                  detect very low frequency (VLF) sound and subtract it from the
                  feedback  signal.  This removes the VLF component  without the
                  need for extra high pass  filtering  - which  would  introduce
                  delay and therefore reduce performance.8

    US 5,313,945  Issued May 24, 1994,  entitled  "Active  Attenuation
                  System for  Medical  Patients".  Active ear  defender  for MRI
                  patients  in which  the  sound  in the  headset  is  monitored
                  through hollow plastic tubes and anti-noise is supplied to the
                  headset through hollow plastic tubes.  Used in the MRI headset
                  product.9

    US 5,375,174  Issued  December 20, 1993,  entitled  "Remote Siren
                  Headset"..  An active headset for use in emergency vehicles in
                  which the  control  system is  separated  from the headset and
                  communicates  remotely.  This  allows  the  headset to be more
                  portable,  have  longer  battery  life,  and  allows  a single
                  controller to control several headsets.

    US 5,604,813  Issued  February  18,  1997,  entitled  "Industrial
                  Headset". A communications headset which provides active noise
                  cancellation without interruption of normal  communication.  A
                  bridge circuit is used to by-pass the ANC circuit as required,
                  and the  communications  signal is boosted when the ANC system
                  is in operation.10

    US 5,699,436  Issued December 16, 1997, entitled "Hands Free Noise
                  Canceling Headset".  The use of the residual microphones in an
                  active noise canceling headset system to pick up the speech of
                  the wearer for use with communication systems.11

    US 5,815,582  Issued September 29, 1998, entitled "Active Plus Selective
                  Headset".  The use of an open back headset and a feedforward
                  noise cancellation system to provide comfort and enhanced
                  communications for the user.12

    EP 0705472    Issued May 10, 2000,  entitled  "Variable Gain Active
                  Noise   Cancellation   System  with  Improved  Residual  Noise
                  Sensing".  In an  active  headset,  the  error  microphone  is
                  displaced  radially with respect to the  loudspeaker  so as to
                  measure  a sound  more  closely  related  to that at the  ear.
                  Additional  features,  such as side perforations,  are used to
                  obtain improved and more robust performance.13

    US 6,069,959  Issued May 30,  2000,  entitled  "Active  Headset".
                  Active headset canceling external noise in both the higher and
                  lower frequency ranges while reducing the subjective  pressure
                  felt within the ears by the user. A bridge  amplifier  circuit
                  is used which is user adjustable  without reducing the breadth
                  of the given  frequency  range over which noise  reduction  is
                  effective.14





      Patents Pending Under Filed Applications



      Patents Pending

      (268)       Headset:  Filed  September 7, 1995. The use of a dome to cover
                  the  front of a  loudspeaker  in an  active  headset,  thereby
                  obtaining a more consistent  acoustic  response.  This enables
                  higher  feedback  gain  to be used  and  results  in  improved
                  cancellation performance.

      (272)       Noise  Cancellation  System for Active Headsets:  Filed August
                  18, 1997.  An active  headset  capable of  compatibility  with
                  existing  socket  configurations  of an  external  device  and
                  capable  of  powering  active  noise  cancellation   circuitry
                  whether or not resident in the active headset.

      (617)       Cushioned Earphones:  Filed March 18, 1998.  Use of auxetic
                  foam in headset ear cushions which more readily moulds around
                  irregularities in the shape of the ear and so reduces air
                  leaks.

      (618)       Headset for  Aircraft:  Filed March 18, 1998.  An active noise
                  reduction  headset  for  use  by  aircraft  passengers.   Each
                  earphone  comprises  at least two  parts,  one  carried by the
                  headband,  the other part  connecting  both  mechanically  and
                  electrically to the first part.  Components requiring frequent
                  replacement  are  carried  by one part and the  other  part is
                  available for re-use.



                  Disclosures for Which Patent Applications are to be Filed


        621       A Non-Adaptive Variable Response Active Headset

        661       An Active Noise Reduction Earbud


<PAGE>



Patents


CLEARSPEECH TECHNOLOGY

      Generics That Apply

    US 4,423,289  Issued   December  27,  1983,   entitled   "Signal
                  Processing  Systems". A means for providing an adaptive filter
                  transfer function which can be adjusted to any desired complex
                  form.  The  filter  operates  by  splitting  the  signal  into
                  frequency bands and modifying the gain in each frequency band.
                  This  is the  basic  structure  used  in the  Adaptive  Speech
                  Filter.15



      Application Specific

    US 5,768,473  Issued June 16,  1998,  entitled  "Adaptive  Speech
                  Filter". A filter for enhancing noisy speech signals. Provides
                  improvements  to a short  term  spectral  amplitude  filter to
                  improve performance and simplify real-time implementation.16

    US 6,091,813  Issued  July  18,  2000,  entitled  "Acoustic  Echo
                  Canceller".  A method and  apparatus for  cancelling  acoustic
                  echoes that enhances the hands free  operation of  audio/video
                  conferencing  equipment,  wireless  and  cellular  telephones,
                  internet  and  intranet   telephones,   etc.  The  method  and
                  apparatus include a novel method for updating the coefficients
                  of an adaptive filter.17

    US 6,108,610  Issued  August  22,  2000,  entitled  "A Method and
                  System  for  Updating  Noise  Estimates  During  Pauses  In An
                  Information  Signal"..  A  method  and  system  for  improving
                  Adaptive  Speech  Filter  estimates of the noise  component of
                  complex signals that contain both the  information  signal and
                  noise.  Noise  estimates are generated and updated only during
                  pauses in the information signal,  thus increasing  processing
                  speed and decreasing system memory.18




<PAGE>



            Disclosures for Which Patent Applications are to be Filed
            ---------------------------------------------------------


631  Adaptive Speech Filter with Constant Output Noise Level


643  A Method of Applying  Noise  Reduction  and Acoustic Echo  Cancellation  to
     Audio

650  Fast Detection of the end of the Utterances  Using the Sum of Parameters of
     Speech Signal

667  Method and  Apparatus for Removing or Reducing  Interfering  Signals from a
     Desired Signal

668  Method and  Apparatus for Removing or Reducing  Interfering  Signals from a
     Desired Signal where there are several interfering sources


<PAGE>



                                   Schedule C
Licensed Technology

1.   The unpatented  technology contained in the patent applications filed or to
     be filed and listed on Schedule B hereto.

2.   The unpatented  technology in NCT Hearing's possession which NCT Hearing is
     free to disclose  and which  supports,  amplifies,  explains or enables the
     design  or  manufacture  of  products  embodying  any of the  claims of the
     Licensed Patents.

3.   The unpatented  technology contained in the Deliverables listed on Schedule
     A hereto.



<PAGE>



                                   Schedule D

Form of NCT Hearing Source Code Delivery Agreement

SOURCE CODE DELIVERY AGREEMENT

     This  Agreement,  made and entered into this _____ day of _______,  2000 by
and between NCT Hearing Products,  Inc., a Delaware corporation,  having a place
of business at 20 Ketchum Street,  Westport,  Connecticut  06880 ("NCT Hearing")
and Pro Tech Communications, Inc., a Florida corporation, having offices at 3311
Industrial 25th Street, Fort Pierce, Florida 34946 ("Recipient").

     WHEREAS,  NCT Hearing and Recipient  entered into a License Agreement dated
September 12, 2000 under which  Recipient and NCT Hearing  agreed to collaborate
in the design and  development of certain  headset  products  incorporating  NCT
Hearing  technology  under  certain of NCT  Hearing's  patented  and  unpatented
technology to make, use and sell such headset products; and

     WHEREAS,  in  connection  with the  foregoing,  NCT  Hearing  will  provide
Recipient with access to certain NCT Hearing source codes; and

     WHEREAS,  Recipient  agrees to hold and use such source codes in accordance
with this Agreement and the License Agreement.

     NOW THEREFORE,  in  consideration  of the mutual promises and covenants set
forth herein, NCT Hearing and Recipient agree as follows:

     1.  Definitions.  As used  herein,  the  definitions  set  forth  above and
hereinafter in this Section 1 shall apply:

     (a)  "Licensed  Software"  shall mean the software  implementation  of: NCT
Hearing's _____________ version of its ________________ algorithm in object code
form executable on _______________________________, all constituting part of the
NCT Hearing  technology  licensed to Recipient by NCT Hearing  under the License
Agreement.

     (b) "Source  Codes"  shall mean the ___ (_) source  codes for the  Licensed
Software in disc and hard copy formats, and all related documentation, including
but not limited to flow charts,  explanatory notes and other  documentation used
with such source codes.

     (c) "Licensed  Products" shall mean Licensed  Products as defined under the
License Agreement.

     2. Delivery of the Source Codes.  Within __________ (____) business days of
the date hereof,  NCT Hearing  shall  deliver the Source Codes to Recipient  and
Recipient  shall hold and use the Source Codes during the term of this Agreement
in accordance with the further provisions hereof.

     3. Use of the Source  Codes.  Recipient's  use of the Source Codes shall be
limited to  implementation  by Recipient  of the Licensed  Software for Licensed
Products or as otherwise  permitted  under the License  Agreement or required or
needed by Recipient to exercise its rights under the License Agreement.

     4. Obligations of Recipient. In consideration of NCT Hearing's delivery and
disclosure of the Source Codes to Recipient,  Recipient  agrees to undertake the
following obligations with respect thereto:

     (a) to consider the Source Codes as Confidential  Information under Article
5 of the License Agreement;

     (b) to use the Source Codes only as permitted  under this Agreement and the
License Agreement and in no other manner whatsoever;

     (c) to not copy, in whole or in part,  the Source Codes except as otherwise
required  or needed for  Recipient  to  exercise  its rights  under the  License
Agreement or as otherwise permitted under the License Agreement; and

     (d) to return to NCT  Hearing  the  Source  Codes  and all  copies  thereof
together with any changes made to the Source Codes by Recipient and to erase all
portions  thereof  from memory upon the  termination  of this  Agreement  or the
termination of the License Agreement, whichever first occurs.

     5. Reservation of Rights.  Except and only to the extent expressly provided
herein  relating to the internal use of the Source Codes by Recipient and to the
extent of any rights  granted to Recipient  under any other  agreement,  such as
this License  Agreement,  no other rights or licenses,  express or implied,  are
hereby granted to Recipient.

     6. Term and  Termination.  The term of this Agreement shall commence on the
date hereof and shall continue until the termination of the License Agreement in
accordance  with the  provisions  of  Article  9 of the  License  Agreement.  In
addition,  either party may terminate  this Agreement in the event of a material
breach of this Agreement by the other party in accordance with the provisions of
Section 9 of the License Agreement.

     7.  Survival.  The  restrictions  and  obligation of Recipient set forth in
Section  4 of this  Agreement  shall  survive  any  expiration,  termination  or
cancellation  of this  Agreement  and  shall  continue  to bind  Recipient,  its
successors and assigns.

     8. Notices.  All notices under this Agreement  shall be given in the manner
provided by Article 19 of the License Agreement.

     9. Rights of Assignment;  Successors and Assigns.  Any rights of assignment
of this Agreement shall be governed by Article 16 of the License Agreement.

     10. Governing Law; Remedies. This Agreement shall be construed and enforced
in  accordance  with the laws of the State of Delaware.  Recipient  acknowledges
that the confidential  and proprietary  status of the Source Code is of a unique
nature,  the loss of which may cause  irreparable  harm to NCT Hearing for which
any sum of money would be  inadequate,  and that it may be impossible to measure
in money the  damages  which  would be  suffered by NCT Hearing by reason of the
loss of such confidential and proprietary status.  Accordingly,  in the event of
any material  breach or  threatened  material  breach by Recipient of any of its
obligations related to maintaining the confidentiality of the Source Codes under
this Agreement,  NCT Hearing shall be entitled, as a matter of right, to a final
order from a court of competent  jurisdiction  of injunctive and other equitable
relief and if NCT Hearing shall institute any action or proceeding to enforce by
specific performance or other equitable relief the provisions hereof,  Recipient
hereby  waives the claim or defense  that NCT Hearing has an adequate  remedy at
law and Recipient  shall not urge in any such action or proceeding  the claim or
defense that such remedy at law exists  provided,  however,  that nothing herein
contained  shall  limit or  constrain  the  respective  rights  of either of the
parties  hereto  to pursue  and  recover  damages  at law for  breaches  of this
Agreement.

     11. Entire Agreement;  Amendment.  This Agreement and the governing License
Agreement,  contain the entire understanding  between the parties concerning the
subject matter hereof.  No change,  modification,  alteration or addition to any
provision  hereof shall be binding unless in writing and signed by an authorized
officer of each of the parties.

     In witness  whereof,  the parties  hereto have executed and delivered  this
Agreement with legal and binding effect as of the date first written.

NCT HEARING PRODUCTS, INC.

By:   ________________________
      Irene Lebovics, President


Pro Tech Communications, Inc.

By:   ________________________







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