Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989222 | Electronic hubodometer | Thomas Diefenbaker, George Fedorovich | 1991-01-29 |
| 4569020 | Irrigation controller | Max E. Snoddy, Charles S. Putnam, Robert S. Gammenthaler, Leo L. Brewster | 1986-02-04 |
| 4516124 | Convertible amphibious aircraft wheel position warning system | Harry D. Shannon | 1985-05-07 |