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

William P. Harthill

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Quadrature correlation phase determining apparatus

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Phase comparison
Patent

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Sonar projector array drive signal source

Communications – electrical: acoustic wave systems and devices – Transmitter systems
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Profile ID: LFUS-PAI-P-213209

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