Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4638357 | Audio scrambler | — | 1987-01-20 |
| 4410134 | Method of and apparatus for operating a monovalent alternative absorption heating installation | Peter Goebel, Franz Gruber | 1983-10-18 |