Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5287146 | Contact type charging device having voltage limiter | Yasuo Tanaka, Tateki Oka, Hitoshi Saito | 1994-02-15 |
| 5287152 | Electric charge supplying device and system employing the same | Tateki Oka, Kazuyoshi Hara, Hitoshi Saito, Yasuo Tanaka | 1994-02-15 |