Assignee
SPARCO INC
US8 patents
Top patents by PatentIndex Score
US5988201ANov 23, 1999
Automatic vent having a multi-hinged valve
SPARCO INC39 citations91
US5941500AAug 24, 1999
Valve actuating device having a reduced impact operating mechanism
SPARCO INC23 citations91
US5529282AJun 25, 1996
Valve actuating device of a heating and/or cooling system
SPARCO INC38 citations91
US5490874AFeb 13, 1996
De-aerator apparatus
SPARCO INC36 citations91
US6032924AMar 7, 2000
Motorized valve actuating device
SPARCO INC49 citations88
US5952769ASep 14, 1999
Method for coating sparkplugs
SPARCO INC34 citations80
USD369650SMay 7, 1996
Zone valve operator
SPARCO INC2 citations61
US4739925AApr 26, 1988
Power driven valve actuator
SPARCO INC6 citations58