Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837787 | Semiconductor laser device with light emission inhibiting means | Toshihiro Takesue, Takashi Murahashi | 1989-06-06 |
| 4825461 | Data communication apparatus for data and/or speech communication on a plurality of communication lines | Kenji Kurita, Koichi Matsumoto | 1989-04-25 |