Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4632235 | Clutch with cantilevered Belleville spring | Richard A. Flotow, Martin E. Kummer | 1986-12-30 |
| 4193485 | Air pressure loaded clutch | Marvin D. Johns, Gordon W. Denton | 1980-03-18 |