Inventor
Phillips S. Sizer
Inventor
Dallas, TX, 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
4,938,060'Downhole inspection system'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990Patents assigned to OTIS ENG CO (1)· patent assignee history
1990Based in Dallas, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OTIS ENG CO | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Dallas, Texas, US | 1 | 1990 |