Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844159 | Locking device for securing a tool in a well conduit | Bernard Doremus | 1989-07-04 |
PA
Peter Airey
Overall (1989): #70,232 of 140,708Top 50%
1
Patents 1989