Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4485682 | Transducer for torque and/or angular displacement measurement, especially in power screwdrivers | Wilhelm Schwarze, Karl Roll, Alfred Hettich, Wolfgang Raidt | 1984-12-04 |
| 4265604 | Rotary pneumatic tool with valve-closing pin actuated upon overspeed | Ernst Dreher, Siegfried Spittler, Richard Wolf | 1981-05-05 |