Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11519376 | On-demand generator starting system | Robert Koenen, Jason A. Hansen, Dale C. VanPatten, Philip Betzhold | 2022-12-06 |
| 11105279 | On-demand generator starting system | Robert Koenen, Jason A. Hansen, Dale C. VanPatten, Philip Betzhold | 2021-08-31 |
| 8863485 | Hybrid lawn mower drive system | Michael Pitcel, William Latus, Robert Koenen, David W. Procknow, Jason D. Elvers | 2014-10-21 |
| 5283475 | Television viewing control unit | — | 1994-02-01 |