Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856687 | Watch case and band attachment structure | Hichihiro Iwamura | 1989-08-15 |
| 4785982 | Watch case and band attachment structure | Michihiro Iwamura, Masataka Matsumoto, Toshio Murata, Tadao Enomoto, Junichi Nishikawa | 1988-11-22 |