Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910662 | Boom control system | Richard K. Heiser, Royal R. Hawkins, James R. Reed | 1990-03-20 |
| 4791549 | Boom control system | Richard K. Heiser, Royal R. Hawkins | 1988-12-13 |
| 4722044 | Boom control system | Richard K. Heiser, Royal R. Hawkins | 1988-01-26 |
| 4355509 | Split torque transmission control | Royal R. Hawkins | 1982-10-26 |