Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4933587 | DC motor having improved contact between commutator and armature | Toshinori Tanaka | 1990-06-12 |
| 4546409 | Device for cooling semiconductor elements | Tadashi Kusanagi, Masakazu Mori | 1985-10-08 |