Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344510 | Disc brake and improved adjuster therefor | Donald D. Johannesen | 1982-08-17 |
| 4197927 | Band brake and actuator therefor | Donald D. Johannesen, Orla L. Holcomb, Jr. | 1980-04-15 |