Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4531020 | Multi-layer encryption system for the broadcast of encrypted information | Anthony Wechselberger, Leo I. Bluestein, David A. Drake, Larry Wayne Simpson | 1985-07-23 |
| 4531021 | Two level encripting of RF signals | Leo I. Bluestein, Paul E. Crandell, David A. Drake, Larry Wayne Simpson | 1985-07-23 |