Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4682559 | Gas driven anchor and launching system therefor | Leonard E. Williams, Jr. | 1987-07-28 |
| 4646840 | Flotation riser | Roy E. Bartholomew, Ronald G. Pettus, Edmund A. Fisher | 1987-03-03 |
| 4188156 | Riser | Edmund A. Fisher | 1980-02-12 |