Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870509 | Compact video signal recording and/or reproducing apparatus adapted for external input video signals and variable speed reproduction | Kenichi Nagasawa, Koji Takahashi, Hiroto Yasumura, Tadayoshi Nakayama | 1989-09-26 |