Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11844334 | Vibratory animal feeder | — | 2023-12-19 |
| 4653654 | Hydraulic crane aerial platform attachment | Douglas W. Endres, Francis J. Griebel | 1987-03-31 |
| 4537281 | Two person aerial platform | Douglas W. Endres, Francis J. Griebel | 1985-08-27 |