Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5523569 | Apparatus for detecting leakages in structural members | Helmut Grobecker, Dietmar Meyer | 1996-06-04 |
| 4385354 | Automatically landing an aircraft | Helmut Grobecker | 1983-05-24 |