Issued Patents 1989
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889339 | Slot machine | — | 1989-12-26 |
| 4881204 | Optical reading or writing apparatus | Michihiro Tadokoro, Hitoshi Imai | 1989-11-14 |
| 4876666 | Wavelength selective optical data storage system | Hitoshi Imai, Michihiro Tadokoro | 1989-10-24 |
| 4868787 | Wavelength selective optical data storage system | — | 1989-09-19 |
| 4868807 | Wavelength selective optical data storage system | Michihiro Tadokoro, Hitoshi Imai | 1989-09-19 |
| 4862442 | Focus detecting apparatus utilizing reflecting surface having variable reflectivity or transmissivity | Michihiro Tadokoro, Hitoshi Imai | 1989-08-29 |
| 4858032 | Device for extracting still picture frames from a moving image video signal and recording same on a magnetic recording medium | Masahiro Konishi | 1989-08-15 |
| 4827167 | Miniature motor | Etuo Mayumi, Hitoshi Fujiwara, Kunio Hiromasa | 1989-05-02 |
| 4822318 | Coin dispenser | — | 1989-04-18 |
| 4821863 | Token feed apparatus for slot machines | — | 1989-04-18 |
| 4819093 | Rotary magnetic recording-reproducing apparatus with disc track checking | Yoshiaki Nakayama | 1989-04-04 |