Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4775234 | Spectroscopic measurement system | — | 1988-10-04 |
| 4749275 | Optical power meter with automatic switching of photodetectors having different wavelength sensitivity characteristics | Kunio Ishikawa | 1988-06-07 |