US PATENT SUBCLASS 315 / 257
.~.~.~ With plural secondary or tapped secondary


Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

246  DF  PULSATING OR A.C. SUPPLY {10}
250  DF  .~ Plural load device systems {5}
254  DF  .~.~ Transformer in the supply circuit {2}
257.~.~.~ With plural secondary or tapped secondary


DEFINITION

Classification: 315/257

(under subclass 254) Systems wherein the transformer is provided with (1) two or more secondary coils, or (2) a tapped secondary coil, and a load device is connected to each of the secondary coils or each of the sections of the tapped secondary coil.

SEE OR SEARCH THIS CLASS, SUBCLASS:

278, for other systems under the class definition provided with a transformer in the supply circuit of a load device, the transformer being provided with three windings.

282, for other systems with tapped transformers in the supply circuit of the load device.

SEE OR SEARCH CLASS

323, Electricity: Power Supply or Regulation Systems,

251, and 332, for miscellaneous systems having a plural primary or secondary winding transformer for controlling the magnitude of the current and/or voltage in a single circuit. 336, Inductor Devices, appropriate subclasses for the structure of transformers and inductive reactors with plural

coils.