Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4958994 | Gear Machine for a pump or engine having bearing members with circumferential relief grooves | Klaus Griese, Claus Jons, Karl-Heinz Muller, Rudolf Muller | 1990-09-25 |