Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314305 | Compressed air vibrator with turbine drive | — | 1994-05-24 |
| 4604029 | Compressed-air vibrator with turbine drive | — | 1986-08-05 |
| 4402255 | Compressed-air vibrator with reciprocating piston | Alex Fehr | 1983-09-06 |
| 4367807 | Sound absorber for compressed-air operated apparatuses, in particular compressed air vibrators | Alex Fehr | 1983-01-11 |