(under subclass 76) Subject matter having a Wheatstone bridge and having means to indicate the current which results because of the unbalance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57+, for Wheatstone bridges used to measure impedance.
98+, for this subject matter having a Wheatstone bridge which is balanced.
SEE OR SEARCH CLASS
323, Electricity: Power Supply or Regulation Systems, 365, for miscellaneous Wheatsone bridge circuits and consult the search notes to that subclass for a list of the other classes which have provision for Wheatstone bridges.
330, Amplifiers,
72, 146 and 175, for amplifier systems wherein series arranged vacuum tubes are in the arms of a bridge, wherein at least one arm of a Wheatstone bridge, and wherein there is a Wheatstone bridge in the signal coupling circuit, respectively.
