Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882614 | Multiplex signal processing apparatus | Sadashi Kageyama, Yoshio Abe, Yoshio Yasumoto, Shuji Inoue, Mitsujiro Matsumoto +3 more | 1989-11-21 |
| 4856025 | Method of digital signal transmission | — | 1989-08-08 |
| 4797735 | Distortion surveillance apparatus for television signal transmission system | Noriaki Morotomi | 1989-01-10 |