Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4252140 | Valve gravity-controlled in dependence upon the flight attitude of an aircraft | — | 1981-02-24 |
| 4197870 | Apparatus for ventilating liquid containers on aircraft | Joachim Popp | 1980-04-15 |