Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5476270 | Shaft seal and gasket assembly | Michael vom Schwemm, Carl-Joseph Testroet, Gerd Upper, Siegfried Flossmann | 1995-12-19 |
| 5462287 | Method for the manufacture of a shaft seal | Rolf Johnen, Gerd Upper | 1995-10-31 |
| 5462288 | Shaft seal assembly | Rolf Johnen, Gerd Upper | 1995-10-31 |