(under subclass 45) Subject matter comprising a transducer means for (1) measuring a pressure (e.g., differential pressure) representing flow at different times or (2) a change in resistance or capacitance representing flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
52, for fluid measurement system using capacitive sensor.
53, for fluid measurement system using resistive sensor.
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73, Measuring and Testing, 861.42 for volume or rate of flow determination using differential pressure, and