Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4590830 | Method and apparatus for controlling casing holdback | Herve D. Duroyon | 1986-05-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4590830 | Method and apparatus for controlling casing holdback | Herve D. Duroyon | 1986-05-27 |