Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8807476 | Helicopter with oblique tail boom | Markus Raffel, Kai Richter | 2014-08-19 |
| 4413828 | Method of playing a board game utilizing cards | — | 1983-11-08 |
| 4362302 | Board game utilizing playing cards | — | 1982-12-07 |