4. Measuring and testing
  5. Volume or rate of flow
  6. By measuring vibrations or acoustic energy

Stanislaw B. Czajkowski

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Air flow measuring apparatus

Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent

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Air flow measuring apparatus

Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent

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Electrical circuits for timing signals

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent

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Sonar distance sensing apparatus

Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent

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Profile ID: LFUS-PAI-P-258011

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