4. Telecommunications
  5. Radiotelephone system
  6. Security or fraud prevention

David Phillip Silverman

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Advanced call sequencing service

Telephonic communications – Special services – Call diversion
Reexamination Certificate

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Alphanumeric paging system

Telecommunications – Transmitter and receiver at separate stations
Patent

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Alphanumeric paging system database

Telecommunications – Transmitter and receiver at separate stations
Patent

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Apparatus and method for controlling communication in an electro

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Automatic authentication system

Telecommunications – Radiotelephone system – Security or fraud prevention
Patent

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Profile ID: LFUS-PAI-P-72128

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