Inventor
HEMPHILL DEAN P
US7 patents
Patents
7 patentsUS4575280AMar 11, 1986
Underwater trencher with pipelaying guide
SHELL OIL CO30 citations91
US4493590AJan 15, 1985
Method and apparatus for on surface joining of submarine pipeline segments using an eccentric hinge
SHELL OIL CO25 citations81
US3959136AMay 25, 1976
Oil spill cleanup method and apparatus
SHELL OIL CO23 citations81
US4438754AMar 27, 1984
Method for sensing and remotely controlling a tool to workpiece spatial relationship
SHELL OIL CO18 citations71
US4616956AOct 14, 1986
Pipeline launching module
SHELL OIL CO3 citations60
US4549836AOct 29, 1985
Ice slot construction
SHELL OIL CO4 citations57
US4523876AJun 18, 1985
Ice slot maintenance
SHELL OIL CO0 citations49