Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9973857 | Piezoelectric speaker and electroacoustic transducer | Takashi Tomita, Hiroshi Hamada, Shigeo Ishii, Yutaka Doshida, Yoshiyuki Watanabe | 2018-05-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9973857 | Piezoelectric speaker and electroacoustic transducer | Takashi Tomita, Hiroshi Hamada, Shigeo Ishii, Yutaka Doshida, Yoshiyuki Watanabe | 2018-05-15 |