Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10461598 | Direct current machine and method for manufacturing a direct current machine | Harald Kauffmann | 2019-10-29 |
| 10199896 | Direct current machine | Harald Kauffmann | 2019-02-05 |
| 8641070 | Drive assistance device, wheelchair and method for determination of the physical efficiency and muscular effort data of a wheelchair driver | Thomas Birmanns, Ralf Ledda, Bernd Engels | 2014-02-04 |
| 8439370 | Stair-climbing device | Franz Scheck, Michael Urso, Wolfgang Hantke | 2013-05-14 |
| 7840327 | Drive assistance device for a wheel chair and a wheel chair having a drive assistance device | Bernhard Stumpp | 2010-11-23 |