Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645477 | Change returning device of coin mechanism | Kazumi Ohsato | 1997-07-08 |
| 5604636 | Method of receiving light and light receiving module of less polarized light dependency | Keisuke Asami, Akishige Itoh | 1997-02-18 |