Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661404 | Circuit network measurement device and calibration method | Koichi Yanagawa, Hiroyuki Iwai, Tatsuo Furukawa | 1997-08-26 |
| 5646536 | Method for calibrating circuit network measurement devices | — | 1997-07-08 |
| 5604727 | Data recording medium an optical disk and an optical disk apparatus | — | 1997-02-18 |