Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973097 | Construction assembly including a gas spring | Hans-Josef Hosan, Castor Fuhrmann | 1990-11-27 |
| 4944498 | Gas spring | Helmut Morgen, Heinz-Josef Heinrichs, Castor Fuhrmann, Herbert Freitag | 1990-07-31 |
| 4651979 | Temperature-compensated gas spring | Herbert Freitag, Castor Fuhrmann | 1987-03-24 |