Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31107 | Feedback shaft extending between swashplate and displacement control valve | Donald O. Johannsen | 1982-12-21 |
| 4359144 | Self-adjusting brake | David L. Coleman | 1982-11-16 |
| 4229144 | Feedback shaft extending between swashplate and displacement control valve | Donald O. Johannsen | 1980-10-21 |