Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682426 | Subscriber site method and apparatus for decoding and selective interdiction of television channels | David L. Petree, Yat Sen Lie | 1997-10-28 |
| 5488659 | Encryption/decryption process and apparatus for a multichannel television system | — | 1996-01-30 |