Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4507608 | Method and arrangement using a pair of resonant circuits for determining and indicating the position of an uneveness in the inner surface of pipes or other types of cylindrical structures | Jurgen Flach, Rigobert Opitz, Hans Baden | 1985-03-26 |