Inventor

ROGERS JR ELMER V

US4 patents

Patents

4 patents

US4535822AAug 20, 1985

Fitting installation device

PIPE LINE DEVELOPMENT CO61 citations92

US5553898ASep 10, 1996

Hot-tapping sleeve

PIPE LINE DEVELOPMENT CO28 citations89

US4976372ADec 11, 1990

High-pressure hydraulic gun

PIPE LINE DEVELOPMENT CO32 citations89

US4832379AMay 23, 1989

Collet grip riser fitting

PIPE LINE DEVELOPMENT CO41 citations88