4. Pulse or digital communications
  5. Repeaters
  6. Testing

David C. Andrus

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Low power transmitter frequency stabilization

Pulse or digital communications – Repeaters – Testing
Patent

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Spread spectrum synchronized receiver and synchronizing methods

Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate

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Wireless communication apparatus for portable electronic...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1063924

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