Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9604005 | Device for injecting a medium into or under the skin with a series of pressure pulses | — | 2017-03-28 |
| 4923041 | Blade for liquid friction couplings | — | 1990-05-08 |
| 4844219 | Fluid friction couplings | — | 1989-07-04 |
| 4683997 | Temperature compensating fluid friction clutch | Karl Friedrich | 1987-08-04 |