Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7963149 | Method and device for determining hydraulic leakage rate in liquid-conveying sections, in particular, injection valves of internal combustion engines | Martin Maier, Eberhard Waibler | 2011-06-21 |
| 4421427 | Shorthand machine having electric platen advancement | Richard Michals, Ralph E. Zum Bahlen | 1983-12-20 |
| 4363558 | Shorthand machine having electric platen advancement | Richard Michals, Ralph E. Zum Bahlen | 1982-12-14 |