X0201 4 2003-12-31 0 0001019779 CUNO INC CUNO 0001253526 FLYNN FREDERICK C JR 400 RESEARCH PARKWAY MERIDEN CT 06450 0 1 0 0 SVP & Chief Financial Officer Common Stock 2003-12-31 4 S 0 4235 45.25 D 69388 D Common Stock 2003-12-31 4 S 0 203 45.26 D 69185 D Common Stock 2003-12-31 4 S 0 135 45.28 D 69050 D Common Stock 2003-12-31 4 S 0 327 45.31 D 68723 D Frederick C. Flynn, Jr. 2004-01-02