Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230568 | Linear bearing | Heinz Greiner, Siegmund H. Kaiser | 1993-07-27 |
| 4438989 | Ball bearing | Wilhelm Birkenmaier | 1984-03-27 |
| 4391476 | Roller bearing | Dieter Pfeifle | 1983-07-05 |
| 4312547 | Seal for bearings | Wilhelm Birkenmaier | 1982-01-26 |