Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856105 | Method and apparatus for making piston rings | Rolf Luckger, Hans-Gerd Kroschel, Jochen Stechow | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856105 | Method and apparatus for making piston rings | Rolf Luckger, Hans-Gerd Kroschel, Jochen Stechow | 1989-08-08 |