Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828537 | Multi-speed free-wheel ring for bicycles | Marc Jourdain | 1989-05-09 |
| 4816013 | Bicycle free-wheel ring, method of fixing sprockets to such a ring and free wheel thus obtained | Didier Kapela | 1989-03-28 |