Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7789064 | Piston engine | Alfred Elsässer | 2010-09-07 |
| 7623012 | Electromagnetic actuator drive | Jens Baumbach, Frank Beyer, Alfred Elsässer, Eberhard Kallenbach, Wolfgang Schilling +2 more | 2009-11-24 |
| 5954848 | Filter cartridge and method for its manufacture | Hans Wiegand | 1999-09-21 |
| 4923290 | Polarization scrambler | Ernst Brinkmeyer, Wolfgang Brennecke | 1990-05-08 |