Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5189792 | Reciprocatory electric shaver | Kiyotaka Otsuka, Masakazu Kita, Masao Tanahashi, Jyuzaemon Iwasaki | 1993-03-02 |
| 4559456 | Battery powered electric appliance | Shigeo Yamamoto, Makoto Tanimizu, Hideji Wataya | 1985-12-17 |
| 4451980 | Chargeable electric instrument | Norio Yamada, Masami Kitamura, Shinsaku Yasunaka, Masao Matsumoto | 1984-06-05 |
| 4380869 | Electric shaver of reciprocating drive type having trimmer blade | Masao Matsumoto, Shinsaku Yasunaka | 1983-04-26 |