Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862305 | Optical system for magnetic tape end detection | Seizi Odate, Shozo Onmori | 1989-08-29 |
| 4840326 | Magnetic tape cassette | Keiji Mori, Masahiko Asai | 1989-06-20 |
SK
Shingo Katagiri
Overall (1989): #16,035 of 140,708Top 15%
2
Patents 1989