Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D348884 | Combined speaker box and screen for a television projector | Osamu Sugihara, Kenichi Wada | 1994-07-19 |
| D343396 | Combined speaker box and screen | Mamoru Yamashita, Hideto Ashida, Koji Mochizuki, Osamu Sugihara, Kenichi Wada | 1994-01-18 |