Assignee

OLIVER JOHN P

3 patents

Top patents by PatentIndex Score

US4651973AMar 24, 1987

Gate valves

OLIVER JOHN P26 citations91

US4577834AMar 25, 1986

Downstream sealing device

OLIVER JOHN P20 citations81

US4443920AApr 24, 1984

Method of manufacturing a gate valve body

OLIVER JOHN P15 citations72