Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4254856 | Coupler of winding key with power spring | Fumito Komatsu, Tadashi Kamijima | 1981-03-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4254856 | Coupler of winding key with power spring | Fumito Komatsu, Tadashi Kamijima | 1981-03-10 |