Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5333704 | Rotating lubricating technique for equipment | — | 1994-08-02 |
| 5273611 | Apparatus for applying a continuous film to a pipeline | Brian C. Webb, Donald Hoff | 1993-12-28 |
| 4793398 | Hangar door assembly | Robert Hoff | 1988-12-27 |