Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879645 | Data processing device with high security of stored programs | Hitoshi Kokuryo, Shinsuke Tamura, Hiroshi Ozaki | 1989-11-07 |
| 4822990 | Admission control system having a transponder actuated by an inquiry signal | Tsutomu Tanaka, Hideo Matsuoka | 1989-04-18 |