Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363006 | Noise reduction system having series connected variable frequency filters | Yutaka Haramoto | 1982-12-07 |
| 4363007 | Noise reduction system having series connected low and high frequency emphasis and de-emphasis filters | Yutaka Haramoto, Kaoru Totsuka, Takao Kawasaki | 1982-12-07 |
| 4354059 | Variable-directivity microphone device | Kaoru Totsuka, Makoto Yamamoto, Naotaka Miyaji | 1982-10-12 |
| 4347510 | Apparatus for automatic selective switching and transmission of input signals | Hideaki Ozaki | 1982-08-31 |