Hagiwara; Yukio
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hagiwara; Yukio.The latest application filed is for "echo canceller using an echo path status detection".
- Hagiwara; Yukio - Tokyo JP
| Patent | Date |
|---|---|
| Echo canceller using an echo path status detection Grant 4,852,161 - Hagiwara July 25, 1 | 1989-07-25 |
| Tone responsible disabler circuit for an echo canceller Grant 4,658,420 - Fukushi , et al. April 14, 1 | 1987-04-14 |
| Device For Moving A Pinch Roller Grant 3,662,938 - Hagiwara May 16, 1 | 1972-05-16 |
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