Inventor
Jefferey J. Lembcke
Inventor
Broken Arrow, OK, US
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
4,796,705'Subsurface well safety valve'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Patents assigned to BAKER OIL TOOLS INC (1)· patent assignee history
1989Based in Broken Arrow, OK, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAKER OIL TOOLS INC | 1 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Broken Arrow, OK, US | 1 | 1989 |