Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4645722 | Photo-thermo-magnetic recording medium and method of preparing same | Toshikazu Katayama, Hisao Arimune | 1987-02-24 |
| 4348161 | Pressure converting apparatus | — | 1982-09-07 |
| 4187746 | Power wrench having ratchet means at both surfaces of socket thereof | — | 1980-02-12 |