Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875610 | Method of and system for driving magnetic tape | Tatsuji Kitamoto, Takuji Sekiguchi | 1989-10-24 |
| 4839744 | Video signal recording method and associated recording/reproducing apparatus | Seishi Sasaki, Shigeru Awamoto, Tatsushi Bannai, Hiromichi Shibaya | 1989-06-13 |
| 4809118 | PCM helical-scan magnetic record/playback systems | Shozo Nakagawa, Hironobu Katayama | 1989-02-28 |