Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835148 | Method and apparatus for preventing improper shifting of a bicycle transmission | Tadashi Ichida, Satoshi Kitamura | 2004-12-28 |
| 6724299 | Bicycle data communication method and apparatus | Kazuhiro Takeda | 2004-04-20 |