P

Inventor

PERKIN GREGG S

US12 patents
⚠️ This page may combine multiple inventors who share the name “PERKIN GREGG S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LOR INC

4 patents
US4565252AJan 21, 1986

Borehole operating tool with fluid circulation through arms

LOR INC199 citations96
US4771811ASep 20, 1988

Heavy wall drill pipe and method of manufacture of heavy wall drill pipe

LOR INC43 citations89
USD297847SSep 27, 1988

Heavy wall drill pipe

LOR INC8 citations71
US4674171AJun 23, 1987

Heavy wall drill pipe and method of manufacture of heavy wall drill pipe

LOR INC20 citations71

OIL PATCH GROUP INC

4 patents
US4792000ADec 20, 1988

Method and apparatus for well drilling

OIL PATCH GROUP INC77 citations94
US4776410AOct 11, 1988

Stabilizing tool for well drilling

OIL PATCH GROUP INC44 citations90
US4765417AAug 23, 1988

Reaming apparatus for well drilling

OIL PATCH GROUP INC31 citations90
US4709462ADec 1, 1987

Method for assembling a well drilling tool

OIL PATCH GROUP INC33 citations90

PERKIN GREGG S

2 patents
US5360967ANov 1, 1994

Oilfield equipment identification apparatus

PERKIN GREGG S150 citations97
US5142128AAug 25, 1992

Oilfield equipment identification apparatus

PERKIN GREGG S147 citations97

SMITH INTERNATIONAL

2 patents
US4282941AAug 11, 1981

Underreamer with large cutter elements and axial fluid passage

SMITH INTERNATIONAL38 citations92
US4023630AMay 17, 1977

Well jar having a time delay section

SMITH INTERNATIONAL22 citations79