Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5771139 | Integrated spring head/gimbal assembly holder | Patrick R. Lee | 1998-06-23 |
| 4378818 | Well drilling float valve | — | 1983-04-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5771139 | Integrated spring head/gimbal assembly holder | Patrick R. Lee | 1998-06-23 |
| 4378818 | Well drilling float valve | — | 1983-04-05 |