Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323922 | Television coding system with channel level identification | Pieter den Toonder, John A. Lund, Richard G. Merrell, Graham S. Stubbs | 1982-04-06 |
| 4313132 | Cable TV security means | James J. Beran | 1982-01-26 |