Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591008 | Fan impellers | Wolfgang Engel, Raimund Engelberger | 1997-01-07 |
| 5274289 | Butting ring for a rotor shaft | — | 1993-12-28 |
| 5267842 | Miniaturized direct current fan | Siegfried Harmsen, Rolf Muller | 1993-12-07 |
| RE34456 | Miniature axial fan | Siegfried Harmsen | 1993-11-23 |
| 5258672 | Axial retaining means for the rotor shaft of an electric motor | — | 1993-11-02 |
| 5170086 | Electric motor with toothed disk to secure stator core | Michael Hermann | 1992-12-08 |
| 5135363 | Miniaturized direct current fan | Siegfried Harmsen, Rolf Muller | 1992-08-04 |
| 5028216 | Miniaturized direct current fan | Siegfried Harmsen, Ing. R. Muller | 1991-07-02 |
| 5013957 | Motor with toothed disk to secure the stator core | — | 1991-05-07 |
| 4992029 | Miniature axial fan | Siegfried Harmsen | 1991-02-12 |
| 4955791 | Small size fan | — | 1990-09-11 |
| 4823034 | Brushless DC motor with tolerance compensation spring | — | 1989-04-18 |
| 4806081 | Miniature axial fan | Siegfried Harmsen | 1989-02-21 |
| 4737673 | Bearing assembly for an axially compact miniature motor or ventilator | — | 1988-04-12 |
| 4618315 | Small fan | Georg Papst | 1986-10-21 |
| 4613778 | Electric motors | Ulrich Koletzki | 1986-09-23 |
| 4564335 | Axial flow fan | Siegfried Harmsen, Georg Papst | 1986-01-14 |
| 4429245 | External rotor production for synchronous hysteresis motor | Siegfried Muller | 1984-01-31 |
| 4373861 | Axial-flow fan | Georg Papst, Siegfried Harmsen | 1983-02-15 |
| 4221546 | Axial fan | Georg Papst, Volker Schlicker | 1980-09-09 |