Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5292433 | Method and apparatus for recovering oil spill | Gerald L. Fletcher | 1994-03-08 |
| 5267622 | Impact block assembly for percussion drilling apparatus | Gerald L. Fletcher | 1993-12-07 |
| 4883133 | Combustion operated drilling apparatus | Gerald L. Fletcher | 1989-11-28 |