Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703936 | Communication apparatus receiving information from portable information medium | Shoichi Takashima, Michihiro Izumi | 1997-12-30 |
| 5646989 | Telephone apparatus | — | 1997-07-08 |
| 5610975 | Visual telephone apparatus | — | 1997-03-11 |
| 5602910 | Control apparatus for switching station connections using a holding tone | Yuichiro Tsutsui, Minoru Ogata, Shoji Suzuki, Shunji Arai, Shigeru Hiroki | 1997-02-11 |
| 5594944 | Communication channel selection method | Minoru Ogata, Shoji Suzuki, Yuichiro Tsutsui, Shunji Arai, Shigeru Hiroki | 1997-01-14 |