Inventor

MCDONALD PATRICK E

3 patents

Patents

3 patents

US4373754AFeb 15, 1983

Threaded connector

HYDRIL CO230 citations94

US4676529AJun 30, 1987

Pipe joint

HYDRIL CO66 citations92

US4736967AApr 12, 1988

Tubular pin configuration to prevent galling while ensuring sealing

HYDRIL CO46 citations89