Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7092525 | Cryptographic system with enhanced encryption function and cipher key for data encryption standard | John Erik Hershey | 2006-08-15 |
| 5335278 | Fraud prevention system and process for cellular mobile telephone networks | J. Neil Birch | 1994-08-02 |
| 5229764 | Continuous biometric authentication matrix | Brian D. Kehoe | 1993-07-20 |
| 5036542 | Audio surveillance discouragement apparatus and method | Brian D. Kehoe | 1991-07-30 |