UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1 )*
(Name of Issuer)
CUNO INCORPORATED
(Title of Class of Securities)
Common Stock
(CUSIP Number)
126583103
Check the following box if a fee is being paid with this
statement. (A fee is not required only if the filing person:
(1) has a previous statement on file reporting beneficial
ownership of more than five percent of the class of securities
described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of
such class.) (See Rule 13d-7).
*The remainder of this cover page shall be filled out for a
reporting persons 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).
1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO.
OF PERSON
THOMSON HORSTMANN & BRYANT, INC.
22-3508647
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
N/A
3 SEC USE ONLY
4 CITIZENSHIP OR PLACE OF ORGANIZATION
A DELAWARE CORPORATION
SADDLE BROOK, NJ 07663
5 SOLE VOTING POWER
323,400
6 SHARED VOTING POWER
7,900
7 SOLE DISPOSITIVE POWER
657,400
8 SHARED DISPOSITIVE POWER
NONE
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
657,400
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
N/A
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
4.06%
12 TYPE OF REPORTING PERSON *
IA
ITEM 1.
(A) CUNO INCORPORATED
(B) 400 RESEARCH PARKWAY, MERIDEN, CT 06450
ITEM 2.
(A) THOMSON HORSTMANN & BRYANT, INC.
(B) PARK 80 WEST, PLAZA TWO, SADDLE BROOK, NJ 07663
(C) A DELAWARE CORPORATION
(D) COMMON
(E) 126583103
ITEM 3.
(E) INVESTMENT ADVISER REGISTERED UNDER SECTION 203 OF THE
INVESTMENT ADVISERS ACT OF 1940
ITEM 4.
(A) 657,400
(B) 4.06%
(C) (I) 323,400
(II) 7,900
(III) 657,400
(IV) NONE
ITEM 5. N/A
ITEM 6. N/A
ITEM 7. N/A
ITEM 8. N/A
ITEM 9. N/A
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.
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.
Richard A. Horstmann, VP
Date: 1/10/00
