Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346476 | A/D, D/A Converter for PCM transmission system | Masao Yamasawa, Toshi Ikezawa | 1982-08-24 |
| 4337459 | Digital-to-analog converter | Masauki Takahasi, Hisami Tanaka, Masao Yamasawa | 1982-06-29 |