Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11950065 | Speaker system | — | 2024-04-02 |
| 6428325 | Rotatable electrical connector for telephone cord | Shunmei Kurosawa, Takahisa Rokuhara, Nobuji Hasegawa | 2002-08-06 |
| 5835587 | Telephone having a hold function | Junko Hirata, Hiroshi Miyamoto | 1998-11-10 |
| 5784458 | Telephone having a hold function | Junko Hirata, Hiroshi Miyamoto | 1998-07-21 |