Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648480 | Condenser microphone having resistance against high-temperature and radioactive rays | Kenshu Watanabe, Mikiya Arai, Masaya Yamaguchi, Yasuo Fujiki, Ryohei Fujimoto | 1987-03-10 |