Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701354 | Telephone mouthpiece for preventing wind noises and method for reducing wind noises input thereto | Yukio Murata | 1997-12-23 |
| 5644618 | Method of self-diagnosing a mobile telephone set for use in a mobile telephone switching system and a mobile telephone set to which the method is applied | — | 1997-07-01 |
| 5640685 | Mobile telephone device wherein an adder supplies a sum of audio and out-of audio band signals to a compressor circuit | — | 1997-06-17 |
| 5604799 | Switching type echo canceler | Yoshiaki Hosoi | 1997-02-18 |