Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9654881 | Electroacoustic transducer | Shigeo Ishii, Takashi Tomita, Yutaka Doshida, Yoshiyuki Watanabe | 2017-05-16 |
| 9601682 | Electroacoustic transducer | Shigeo Ishii, Takashi Tomita, Yutaka Doshida, Yoshiyuki Watanabe | 2017-03-21 |