Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4565378 | Shaft seal with lip lifting in response to shaft rotation and gas pressure | Heinz Wehrfritz | 1986-01-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4565378 | Shaft seal with lip lifting in response to shaft rotation and gas pressure | Heinz Wehrfritz | 1986-01-21 |