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 | Peter Airey | 1989-07-04 |
BD
Bernard Doremus
Overall (1989): #129,801 of 140,708Top 95%
1
Patents 1989