Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4374547 | Crank connector for directional drilling | Jean Nguyen, Andre Cendre | 1983-02-22 |
| 4286676 | Crank connector for directional drilling | Jean Nguyen, Andre Cendre | 1981-09-01 |