US PATENT SUBCLASS 318 / 813
.~.~.~ With transformer

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

727  DF  INDUCTION MOTOR SYSTEMS {12}
767  DF  .~ Primary circuit control {9}
812  DF  .~.~ Voltage control {3}
813.~.~.~ With transformer

DEFINITION

Classification: 318/813

With transformer:

(under subclass 812) Subject matter wherein the means for regulating the voltage includes a transformer.

SEE OR SEARCH CLASS

336, Inductor Devices, appropriate subclasses for transformers, per se.