Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654685 | Timekeeping arrangement for sporting competitions | — | 1997-08-05 |
| 5652573 | Apparatus for the acquisition of events, in particular in carrier pigeon racing | Klaus Geisslinger, Bolko Wietrzynski | 1997-07-29 |