Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856105 | Method and apparatus for making piston rings | Manfred Brocksieper, Rolf Luckger, Hans-Gerd Kroschel | 1989-08-08 |
| 4366543 | Method and apparatus for the out-of-round shaping of workpieces | Otto Feller, Heinz Oepen | 1982-12-28 |