4. Multiplex communications
  5. Communication over free space
  6. Combining or distributing information via time channels

Oliver F. McDonald

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Digital communication system with integral messaging and method

Multiplex communications – Communication over free space – Combining or distributing information via time channels
Patent

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Diversity receiver arrangement for digital signals

Pulse or digital communications – Repeaters – Testing
Patent

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Method and apparatus for voice communication

Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1222186

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