4. Telecommunications
  5. Radiotelephone system
  6. Emergency or alarm communication

Stephen D. Stearns

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Finding cell phones in rubble and related situations

Telecommunications – Radiotelephone system – Emergency or alarm communication
Reexamination Certificate

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Reduced beamwidth antenna

Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2913580

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