Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681099 | Electrohydraulic pressure control device | Helmut Steffes | 1997-10-28 |
| 5653249 | Method for closing channels containing pressure fluid in a housing | Peter Volz, Dalibor Zaviska, Helmut Weisbrod | 1997-08-05 |