Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799789 | Chromatic dispersion measuring system for optical fibers | Takeshi Tsukamoto, Hidetoshi Miyao | 1989-01-24 |
| 4799790 | Chromatic dispersion measuring system for optical fibers | Takeshi Tsukamoto | 1989-01-24 |