Forbes; F. Douglas
Patent Applications and Registrations
Patent applications and USPTO patent grants for Forbes; F. Douglas.The latest application filed is for "methods and apparatus for scrambling and unscrambling premium television channels".
- Forbes; F. Douglas - Palos Verdes Peninsula CA
- Forbes; F. Douglas - Palos Verdes CA
| Patent | Date |
|---|---|
| Methods and apparatus for scrambling and unscrambling premium television channels Grant 3,914,534 - Forbes October 21, 1 | 1975-10-21 |
| Phantom Subscriber Grant 3,806,814 - Forbes April 23, 1 | 1974-04-23 |
| Catv Program Control System Grant 3,790,700 - Callais , et al. February 5, 1 | 1974-02-05 |
| Adjacent Catv Channel Jamming Grant 3,760,097 - Burroughs , et al. September 18, 1 | 1973-09-18 |
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