Inventor

PETTIGREW THOMAS L

US3 patents

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

SUNSTONE CORP

1 patent

US8028750B2Oct 4, 2011

Force balanced rotating pressure control device

SUNSTONE CORP21 citations90

SUNSTONE TECHNOLOGIES LLC

1 patent

US7743823B2Jun 29, 2010

Force balanced rotating pressure control device

SUNSTONE TECHNOLOGIES LLC36 citations87

DRESSER IND

1 patent

US4750564AJun 14, 1988

Tubing resettable well packer

DRESSER IND26 citations86