Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943265 | Device for transmitting an adjustable position of a drivebelt pulley in a continually variable transmission | Holm Schmitt, Hartmut Roper, Peter Heider | 1990-07-24 |
| 4648423 | Clutch-pressure control valve | — | 1987-03-10 |
| 4632230 | Valve system for a hydraulically controlled starting friction clutch | Manfred Bilharz, Hartmut Roper, Martin B. Taal, Peter Heider, Ernst Kohl +1 more | 1986-12-30 |
| 4618123 | Valve system for a hydraulically controlled starting friction clutch | Manfred Bilharz, Peter Heider, Hartmut Roper, Martin B. Taal, Ernst Kohl +1 more | 1986-10-21 |