Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4951660 | Diver's rescue apparatus | — | 1990-08-28 |
| 4219038 | Gas mixing device for breath-protecting, diving, medical and laboratory techniques | Manfred Schinkmann, Holmer Rohling | 1980-08-26 |
| 4195628 | Deep sea diving system having a closed respiratory gas circulation system | Joachim Gelhaus | 1980-04-01 |