Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858029 | Video recorder with field memory | — | 1989-08-15 |
| 4827359 | Video recording and reproducing apparatus | Keiji Hatanaka | 1989-05-02 |
KO
Katsuhiro Ookawa
Overall (1989): #22,797 of 140,708Top 20%
2
Patents 1989