Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8973262 | Method for producing a piston ring | Johannes Esser, Steffen Hoppe | 2015-03-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8973262 | Method for producing a piston ring | Johannes Esser, Steffen Hoppe | 2015-03-10 |