Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670461 | High temperature lubricating grease containing urea compounds | Hans Schreiber, Peter Seigert, Wolfgang Hildebrandt | 1997-09-23 |
| 5609527 | Constant velocity universal joint having an improved cage design | Charles E. Fuerstenau, Wolfgang Hildebrandt, Peter Seigert | 1997-03-11 |