(under subclass 744) Subject matter wherein the pressure being measured displaces a movable wall to generate or modify an electric current and the value of such current is indicative of the pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
335.02, for current generating hygrometers or hygrostats.
717, 723, 733, and 749, for other pressure gauges with electrical readout.
749, for U-tube pressure gauges with electrical readout.
753, for electric pressure gauges.
SEE OR SEARCH CLASS
310, Electrical Generator or Motor Structure, 311+, for piezoelectric devices, especially subclass 338.
374, Thermal Measuring and Testing,
188, for a thermometer with a mechanical sensor and an electrical indicator.
