|
US3299359A
|
|
Frequency compensating system
|
|
US3305632A
|
|
Television receiver if frequency stabilizing system
|
|
GB799704A
|
|
Improvements in or relating to television receivers
|
|
US2809032A
|
|
Sheet-separating apparatus
|
|
US2875270A
|
|
Subscription-television system
|
|
US2737584A
|
|
Pulse-width discriminator circuit
|
|
US2843841A
|
|
Information storage system
|
|
US2808871A
|
|
Tab-affixing device
|
|
US2848163A
|
|
Record member for computing system
|
|
US2720597A
|
|
Magnetic switching circuit
|
|
US2875269A
|
|
Video scrambling and unscrambling system
|
|
US2879324A
|
|
Video scrambling and unscrambling system
|
|
US2709248A
|
|
Magnetic core memory system
|
|
US2760404A
|
|
Photographic memory
|
|
US2843655A
|
|
Subscription television with scrambled transmission and marquee and barker
|
|
US2843654A
|
|
Subscription television system using land line
|
|
US2839173A
|
|
Prepaid entertainment distribution system
|
|
GB764078A
|
|
Improvements in or relating to television entertainment distribution systems
|
|
GB764079A
|
|
Improvements in or relating to television control system
|
|
GB764077A
|
|
Improvements in or relating to television entertainment distribution system
|
