Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346472 | Method and apparatus for eliminating double bit errosion in a differential phase shift keying system | Isao Ishikawa, Teiji Okamoto, Nobuo Tsukamoto | 1982-08-24 |
| 4292476 | Speech channel switching networks suitable for use in combination with electronic key telephone sets | Kazuyuki Yamamoto | 1981-09-29 |
| 4288862 | Memory circuit | Ichiro Ohhinata, Hideo Suzuki | 1981-09-08 |