Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829512 | Loop-back control apparatus for a loop network having duplicate optical fiber transmission lines | Norio Yoshida | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829512 | Loop-back control apparatus for a loop network having duplicate optical fiber transmission lines | Norio Yoshida | 1989-05-09 |