Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636308 | Apparatus for measuring characteristics of optical angle | Kazunori Tsutsui, Koichi Oka, Akira Kawaguchi, Tetsuo Hamada, Michio Tsujio | 2003-10-21 |
| 4399717 | Change-speed transmission for wheeled vehicles | Katunori Watanabe | 1983-08-23 |
| 4345904 | Chain drive assembly | Akio Numazawa, Yutaka Taga | 1982-08-24 |