4. Telephonic communications
  5. Concentrator or trunk selector
  6. Concentrator-distributor pair

Paul Raymond Sand

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Automobile security alarm systems

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate

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Cellular communications system featuring a central radio...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate

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Coupling of splitter with subset of plurality of lines on...

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
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Enhanced life-line service for cable telephone customers

Telephonic communications – Emergency or alarm communications
Reexamination Certificate

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Mailbox profile portion copying among voicemail system...

Electrical computers and digital processing systems: multicomput – Computer conferencing – Demand based messaging
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Profile ID: LFUS-PAI-P-2103155

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