Inventor
Bernard Humphrey
Inventor
Potterton, GB
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
6,763,891'Production tree with multiple safety barriers'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004Patents assigned to VETCO GRAY INC ABB (1)· patent assignee history
2004Based in Potterton, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| VETCO GRAY INC ABB | 1 | 2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Potterton, GB | 1 | 2004 |