Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878821 | Detachable anti-rupture ring for the housing of a turbo power plant | Axel Rossman, Siegfried Sikorski | 1989-11-07 |
| 4861638 | Molded article made of a composite material including metals and nonmetallic substances | — | 1989-08-29 |
| 4818176 | Burst guard ring for turbo-engine housings | Axel Rossmann | 1989-04-04 |