Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4379409 | Apparatus for producing ultrasonic waves in a workpiece | Erik Primbsch | 1983-04-12 |
| 4379633 | Apparatus for maintaining adjustment of coincidence and relative phase relationship of light beams in an interferometer | Walter Kaule, Erik Primbsch | 1983-04-12 |
| 4345475 | Method and apparatus for receiving ultrasonic energy by optical means | — | 1982-08-24 |