Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872091 | Memory cartridge | Yoshio Maniwa, Masaichi Niro, Daisuke Abe, Haruhiko Nagayama | 1989-10-03 |
| 4860119 | Image forming system with memory duplex printing | Yoshio Maniwa | 1989-08-22 |
| 4837816 | Communication system using switching apparatus | Noboru Mizuhara, Tohru Hoshi, Jiro Kashio | 1989-06-06 |
| 4823342 | Time division exchange system having functions of compressing and expanding information | Koji Hirai, Akira Kusaba | 1989-04-18 |