Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7050572 | Telephone set and response method to incoming call | — | 2006-05-23 |
| 6963639 | Phone apparatus having redialing function capable of surely preventing unauthorized person from intercepting stored contents | Fumiyoshi Toyoshima | 2005-11-08 |
| 5260992 | Key telephone system with reduction of delay of ring tone generation at telephone set | — | 1993-11-09 |