Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5170159 | Sleep timer for audio/visual apparatus and method of sleep timer operation | Yoshihiro Kawabata, Takehiko Kuroiwa, Kazuya Tsukada, Shinji Sugiyama, Kikuo Ishikawa | 1992-12-08 |