Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889772 | Composite material having a slide layer applied by cathode sputtering | Erich Bergmann | 1989-12-26 |
| 4847135 | Composite material for sliding surface bearings | Hans-Paul Baureis, Wolfgang Bickle | 1989-07-11 |