4. Communications, electrical: acoustic wave systems and devices
  5. Transmitter systems

David R. Costa

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Echo simulator for active sonar

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Power envelope shaper

Communications – electrical: acoustic wave systems and devices – Transmitter systems
Patent

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Serial digital audio data port with multiple functional...

Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Bus or line termination
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1136743

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