Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880290 | Opto-electronic device and method for producing the device | Tetsuo Kumazawa, Makoto Shimaoka, Kazuyuki Fukuda | 1989-11-14 |
| 4870678 | Store and forward switching type communication control apparatus | — | 1989-09-26 |