Inventor · disambiguated record
Douglas W. Crawford
Also filed as: CRAWFORD DOUGLAS W
4 granted patents·98 citations·filing 1976–1996
79Inventor score
Technology areasE21B
Top patents by PatentIndex Score
4 records- 0167US4111608AGas lift systemSCHLUMBERGER TECHNOLOGY CORP·Filed 1976·Granted Sep 5, 1978·33 cites·3 claims
- 0254US4765403AApparatus for placing and removing well flow control devicesCRAWFORD DOUGLAS W·Filed 1984·Granted Aug 23, 1988·21 cites·42 claims
- 0347US5058670AOriented valve and latch for side pocket mandrelCRAWFORD DOUGLAS W·Filed 1990·Granted Oct 22, 1991·22 cites·16 claims
- 0444US5740860ASide pocket mandrel for a measuring instrumentFiled 1996·Granted Apr 21, 1998·22 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Douglas W. Crawford files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →