4. Interactive video distribution systems
  5. Video distribution system with upstream communication
  6. Transmission network

Semion Kofman

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Method and apparatus for identification of radio frequency tag

Communications: electrical – Selective – Interrogation response
Reexamination Certificate

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Method and system for providing DC power on local telephone...

Telephonic communications – Subscriber line or transmission line interface – Power supply
Reexamination Certificate

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Method, device and system for cable television distribution

Interactive video distribution systems – Video distribution system with upstream communication – Transmission network
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2238190

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