Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9828966 | Lawn mower starter system | Jason A. Hansen, Robert Koenen, David W. Procknow, Stephen J. Lavender | 2017-11-28 |
| 9759175 | Starter system for an engine | Jason A. Hansen, Robert Koenen, David W. Procknow, Stephen J. Lavender | 2017-09-12 |
| 9267482 | Starter system for an engine | Jason A. Hansen, Robert Koenen, David W. Procknow, Stephen J. Lavender | 2016-02-23 |
| 9220192 | Lawn mower starter system | Jason A. Hansen, Robert Koenen, David W. Procknow, Stephen J. Lavender | 2015-12-29 |
| 8863485 | Hybrid lawn mower drive system | Michael Pitcel, William Latus, Robert Koenen, David W. Procknow, Jeffrey Berger | 2014-10-21 |
| 8857138 | Starter system for an engine | Jason A. Hansen, Robert Koenen, David W. Procknow, Stephen J. Lavender | 2014-10-14 |
| 8733072 | Starter system for an engine | Jason A. Hansen, Robert Koenen, David W. Procknow, Stephen J. Lavender | 2014-05-27 |