Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865321 | Memory cartridge and information processor unit using such cartridge | Masayuki Yukawa | 1989-09-12 |
| 4860128 | Recordable data device having identification symbols formed thereon and cooperating data processing system having registering symbols | — | 1989-08-22 |
| 4801489 | Printed circuit board capable of preventing electromagnetic interference | Kazumasa Eguchi, Fumio Nakatani, Shinichi Wakita, Hisatoshi Murakami, Tsunehiko Terada | 1989-01-31 |
| 4799635 | System for determining authenticity of an external memory used in an information processing apparatus | — | 1989-01-24 |