Inventor

RICKARD WILLIAM M

US3 patents

Patents

3 patents

US5405171AApr 11, 1995

Dual gasket lined pipe connector

UNION OIL CO127 citations93

US5163715ANov 17, 1992

Lined pipe connection device and method

UNION OIL CO22 citations87

US5566986AOct 22, 1996

Dual gasket lined pipe connector

UNION OIL CO11 citations68