Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349695 | Recipient and message authentication method and system | David W. Abmayr | 1982-09-14 |
| 4278840 | Dynamic frequency and time voice encryption system and method | Mitchell Wilkinson | 1981-07-14 |
| 4229817 | Portable electronic cryptographic device | Merlon B. Carter | 1980-10-21 |
| 4185166 | Multi-mode digital enciphering system | Frederick A. Kinch, Jr. | 1980-01-22 |