US PATENT SUBCLASS 318 / 535
.~.~.~ Wheatstone bridge

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

521  DF  FIELD OR SECONDARY CIRCUIT CONTROL {6}
533  DF  .~ Impedance-controlled {1}
534  DF  .~.~ Plural, diverse or diversely connected or controlled field circuit impedances {1}
535.~.~.~ Wheatstone bridge

DEFINITION

Classification: 318/535

(under subclass 534) Subject matter in which the several impedances are connected in a Wheatstone bridge (i.e., four-arm) arrangement with respect to each other.

SEE OR SEARCH CLASS

322, Electricity: Single Generator Systems,

77, for Wheatstone bridge arrangements of impedances in the field circuit of generators.

323, Electricity: Power Supply or Regulation Systems,

365, for Wheatstone bridge arrangements of impedances in general.

333, Wave Transmission Lines and Networks,

169, for wave filters of the Wheatstone bridge or lattice type.