Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860523 | Hermetic packaging apparatus | Iwao Teteishi, Yoshiyuki Ogura, Takeshi Hashimoto, Tuguyoshi Ritou, Katsufumi Kajiyama +9 more | 1989-08-29 |
| 4845700 | Front loading disc player | Toshiaki Koizumi, Masao Kase, Masatsugu Otaki, Masakazu Yamashita, Ryo Matsuura | 1989-07-04 |