Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D385476 | Ferrule | — | 1997-10-28 |
| 4971152 | Method and apparatus for repairing well casings and the like | Charles H. Koster, Clark Clement, James M. Baker | 1990-11-20 |
| 4934312 | Resin applicator device | Charles H. Koster | 1990-06-19 |