Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320968 | Fault location system in an optical fiber transmission system | Hideharu Tokiwa | 1982-03-23 |
| 4313224 | Monitoring system of an optical power in an optical repeater | Yasuhiko Niiro | 1982-01-26 |