0000902219-96-000066 SC 13G/A 1 19960208 NASD CENTRAL SPRINKLER CORP 0000766041 3490 232328106 PA 1031 SC 13G/A 34 005-37077 96513035 451 N CANNON AVE LANSDALE PA 19446 2153620700 451 N CANNON AVE LANDSDALE PA 19446 WELLINGTON MANAGEMENT CO 0000902219 0000 042683227 MA 1231 SC 13G/A 75 STATE STREET BOSTON MA 02109 6179515000 75 STATE STREET BOSTON MA 02109 SC 13G/A 1 000090221996000066-001-seq1-sc-13g-a.txt 13G FORM