Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4517554 | Method and apparatus for inspecting a danger alarm system | Peer Thilo | 1985-05-14 |
| 4254411 | Danger alarm system | Peer Thilo | 1981-03-03 |
| 4222041 | Danger alarm system | Romuald von Tomkewitsch | 1980-09-09 |