Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5454028 | Cordless key telephone system having zone switching function | Toshihiro Hara, Kosuke Hashimoto, Ichiro Tamura | 1995-09-26 |
| 5365572 | Cordless key telephone system with multiple tenant facility | Noboru Saegusa, Yukihiro Shimura, Hirokazu Adachi, Ichiro Tamura, Kosuke Hashimoto | 1994-11-15 |
| 5283817 | Cordless key telephone system for covering multiple service areas having exclusively assigned control channels | Toshihiro Hara, Yukihiro Shimura, Kosuke Hashimoto | 1994-02-01 |
| 5239572 | Cordless key telephone system capable of quickly answering incoming calls | Noboru Saegusa, Akio Yotsutani, Kouzo Kobayashi, Hiroyuki Misawa, Kosuke Hashimoto | 1993-08-24 |