Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4307859 | Automatic message announcement system | Yoshiro Hayashi, Takaki Shimura, Kozo Ishikawa, Kiyoshi Wada, Eiji Yamanaka +1 more | 1981-12-29 |
| 4276572 | Automatic message announcement system | Yoshiro Hayashi, Takaki Shimura, Kozo Ishikawa, Kiyoshi Wada, Eiji Yamanaka +1 more | 1981-06-30 |