Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880244 | Mounting for a sealing ring | — | 1989-11-14 |
| 4867412 | Apparatus for the production by powder metallurgy of a section of a header pipe of a heat exchanger | — | 1989-09-19 |
| 4810165 | Adjusting mechanism for guide blades of turbo-propulsion units | Hilbert Holzhauer | 1989-03-07 |