Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841521 | Method and system for bidirectionally transmitting data | Hirotoshi Shirasu, Hiroshi Takatori, Tohru Kazawa, Toshiro Suzuki, Takanori Miyamoto +1 more | 1989-06-20 |
| 4796296 | PCM coder and decoder having function of two-wire/four-wire conversion | Kazuo Yamakido, Takahiko Kozaki, Shigeo Nishita, Masaru Kokubo | 1989-01-03 |