CUSIP No. 13G Page 1 of 9 Pages
74371R106
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. )
Protocol Systems, Inc.
(Name of issuer)
Common Stock, $.01 par value per share
(Title of class of securities)
74371R106
(CUSIP number)
The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
notes).
<PAGE>
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
EQSF Advisers, Inc.
(EIN 13-3354359)
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
New York Corporation
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
924,100
NUMBER OF
-------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY None
-------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 924,100
-------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
None
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
924,100
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* [ ]
- --------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
11
10.79%
- --------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IA
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
M.J. Whitman Advisers, Inc.
(EIN 13-3686379)
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
New York Corporation
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
6,200
NUMBER OF
-------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY None
-------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 6,200
-------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
None
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
6,200
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* [ ]
- --------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
11
0.07%
- --------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IA
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Martin J. Whitman
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
USA
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF None (See Item 4)
-------------------------------------------------
6 SHARED VOTING POWER
SHARES
None
BENEFICIALLY
OWNED BY
-------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING None (See Item 4)
-------------------------------------------------
PERSON WITH 8 SHARED DISPOSITIVE POWER
None
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
-0- (See Item 4)
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* [ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
-0-
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Item 1.
(a) Name of Issuer:
Protocol Systems, Inc. (the "Issuer").
(b) Address of Issuer's Principal Executive Offices:
8500 S.W. Creekside Place, Beaverton, OR 97008
Item 2.
(a) Name of Person Filing:
This schedule is being jointly filed by EQSF Advisers, Inc.
("EQSF"), M.J. Whitman Advisers, Inc. ("MJWA") and Martin J. Whitman, the Chief
Executive Officer of EQSF and MJWA and controlling person of EQSF and MJWA.
(EQSF, MJWA and Martin J. Whitman are sometimes collectively referred to
hereinafter as "Filer"). Attached hereto as an exhibit is a copy of the joint
Schedule 13G filing agreement among the reporting persons.
(b) Address of Principal Business Office:
The address of the principal executive office of EQSF, MJWA
and Mr. Whitman is: 767 Third Avenue, New York, New York 10017-2023.
(c) Citizenship:
The citizenship or place of organization of each of the
reporting persons is as follows:
EQSF
New York State corporation.
MJWA
New York State corporation.
Martin J. Whitman
United States citizen.
(d) Title of Class of Securities:
Common Stock, $.10 par value per share.
(e) CUSIP Number:
74371R106
<PAGE>
Item 3. If this statement is being filed pursuant to Rules 13d-1(b), or
13d-2(b), check whether the person filing is a:
(e) Investment Adviser registered under section 203 of the
Investment Advisers Act of 1940 (EQSF and MJWA).
Item 4. Ownership.
(a)&(b) EQSF beneficially owns 924,100 shares, or 10.79% of the class
of securities of the issuer. MJWA beneficially owns 6,200 shares, or 0.07% of
the class of securities of the issuer.
(c) (i) EQSF: 924,100
MJWA: 6,200
(ii) Not applicable.
(iii) EQSF: 924,100
MJWA: 6,200
(iv) Not applicable.
Mr. Whitman disclaims beneficial ownership of all such shares.
Item 5. Ownership of Five Percent or Less of a Class.
Not applicable.
<PAGE>
Item 6. Ownership of More than Five Percent on Behalf of Another Person.
Third Avenue Value Fund, an investment company registered
under the Investment Company Act of 1940, has the right to receive dividends
from, and the proceeds from the sale of 601,400 of the shares reported by EQSF;
Third Avenue Small-CapValue Fund, an investment company registered under the
Investment Company Act of 1940, has the right to receive dividends from, and the
proceeds from the sale of 275,000 of the shares reported by EQSF; and Third
Avenue Value Portfolio of the WRL Series Fund, an investment company registered
under the Investment company Act of 1940, has the right to receive the dividends
from, and the proceeds from the sale of 47,700 of the shares reported by EQSF.
Various clients for whom MJWA acts as investment advisor have the right to
receive dividends from, and the proceeds of the sale of, the shares reported by
MJWA.
Item 7. Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on By the Parent Holding Company.
Not Applicable.
Item 8. Identification and Classification of Members of the Group.
Not applicable.
Item 9. Notice of Dissolution of Group.
Not applicable.
Item 10. Certification.
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired in the ordinary
course of business and were not acquired for the purpose of and do not have the
effect of changing or influencing the control of the issuer of such securities
and were not acquired in connection with or as a participant in any transaction
having such purposes or effect.
<PAGE>
SIGNATURE
After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.
July 9, 1998
(Date)
EQSF ADVISERS, INC.
By:/s/ MARTIN J. WHITMAN
Martin J. Whitman
Chairman and Chief Executive Officer
M.J. WHITMAN ADVISERS, INC.
By:/s/ MARTIN J. WHITMAN
Martin J. Whitman
Chairman and Chief Executive Officer
/s/ MARTIN J. WHITMAN
Martin J. Whitman
JOINT FILING AGREEMENT
In accordance with Rule 13d-1 (f) under the Securities
Exchange Act of 1934, as amended, the undersigned hereby agree to the joint
filing with all other Reporting Entities (as such term is defined in the
Schedule 13G) on behalf of each of them of a statement on Schedule 13G
(including amendments thereto) with respect to the Common Stock, $.10 par value
per share, of Protocol Systems, Inc., and that this Agreement be included as an
Exhibit to such joint filing. This Agreement may be executed in any number of
counterparts all of which taken together shall constitute one and the same
instrument.
IN WITNESS WHEREOF, the undersigned hereby execute this
Agreement this 9th day of July, 1998.
EQSF ADVISERS, INC.
By:/s/ MARTIN J. WHITMAN
Martin J. Whitman
Chairman and Chief Executive Officer
M. J. WHITMAN ADVISERS, INC.
By:/s/ MARTIN J. WHITMAN
Martin J. Whitman
Chairman and Chief Executive Officer
/s/MARTIN J. WHITMAN
Martin J. Whitman
