Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6816683 | Wavelength division multiplexing communications network supervisory system | Takafumi Terahara, Takeo Osaka | 2004-11-09 |
| 6807370 | Optical transmission system | — | 2004-10-19 |