Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5499219 | Electro-acoustical transducer arrangement | Axel Brenner, Peter Mertens, Friedrich Meyer, Horst Trense, Friedrich Weber +1 more | 1996-03-12 |
| 4608857 | Method for checking pipes or pipe networks for leaks | Peter Mertens | 1986-09-02 |