US PATENT SUBCLASS 323 / 215
.~ Using transformer

Current as of: June, 1999
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323 /   HD   ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS

212  DF  FOR PHASE SHIFT OR CONTROL {5}
215.~ Using transformer {1}
216  DF  .~.~> With movable structure or winding

DEFINITION

Classification: 323/215

Using transformer:

(under subclass 212) Subject matter wherein the element which produces the shift in phase is a transformer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

247, 305 and 328, for transformers used in voltage or current regulators.

355, for miscellaneous transformer systems.

SEE OR SEARCH CLASS

336, Inductor Devices, for transformers, per se.