Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8493008 | HVAC adjustment module | William F. Merkel, William M. Jones | 2013-07-23 |
| 4634941 | Electric wheelchair with improved control circuit | — | 1987-01-06 |
| 4511825 | Electric wheelchair with improved control circuit | — | 1985-04-16 |
| 4387325 | Electric wheelchair with speed control circuit | — | 1983-06-07 |