Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666419 | Encryption device and communication apparatus using same | Keiichi Iwamura | 1997-09-09 |
| 5600720 | Encryption apparatus, communication system using the same and method therefor | Keiichi Iwamura | 1997-02-04 |