US PATENT SUBCLASS 455 / 572
.~.~ Power supply


Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

73  DF  TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER) {9}
550  DF  .~ Radiotelephone equipment detail {17}
572.~.~ Power supply {2}
573  DF  .~.~.~> Battery charging
574  DF  .~.~.~> Power conservation


DEFINITION

Classification: 455/572

Power supply:

(under subclass 550) Subject matter including significant details of a source of electrical energy for supplying power to the radiotelephone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127, for power or bias voltage supply in a radio transmitter.

343, for power or bias voltage supply in a radio receiver.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

43+, for plural power supply circuits in an electrical transmission or interconnection system. 323, Electricity: Power Supply or Regulation Systems, appropriate subclasses for power supply in general.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

530+, for a specific source of supply having nonlinear circuitry.