Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7341123 | Running wheel arrangement for a wheelchair | Thomas Brendel, Heinz Perk, Oliver Kretschmer | 2008-03-11 |
| 7278653 | Wheelchair, particularly electric wheelchair | Joachim Pelka, Heinrich Perk, Thomas Brendel | 2007-10-09 |