Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885794 | Method and apparatus for protection of channel access in broadband cable communications systems | — | 1989-12-05 |
| 4876718 | Secure data packet transmission system and method | Richard W. Citta, Paul M. Gosc, Dennis M. Mutzabaugh | 1989-10-24 |
| 4817144 | Secure TV scrambling system using framing code switching | Richard W. Citta, Paul M. Gosc, Dennis M. Mutzabaugh | 1989-03-28 |