Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799162 | Route bus service controlling system | Takeshi Kawahara, Hideki Hayakawa, Masaru Mori | 1989-01-17 |
| 4791571 | Route bus service controlling system | Shinichi Takahashi, Hisao Ishii, Takeshi Kawahara, Toshiyuki Manita | 1988-12-13 |