US PATENT SUBCLASS 455 / 286
.~.~.~.~ Wave filter, coil, or wave trap

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
269  DF  .~ With wave collector (e.g., antenna) {4}
280  DF  .~.~ With coupling to a stage of the receiver {7}
283  DF  .~.~.~ Undesired signal or noise control (e.g., antistatic) {5}
286.~.~.~.~ Wave filter, coil, or wave trap

DEFINITION

Classification: 455/286

Wave filter, coil or wave trap:

(under subclass 283) Subject matter including means whereby undesired signals differing in frequency from the desired signal are absorbed and thus prevented from appearing at the input terminals of the receiver.

SEE OR SEARCH THIS CLASS, SUBCLASS:

193.1, for receivers having tuned antenna coupling means in general.

287, for similar means comprising a shunt or bypass.

307, for receivers in general with filter means for reduction of the effects of noise or other interference.

SEE OR SEARCH CLASS

333, Wave Transmission Lines and Networks,

24+, for coupling networks consisting of passive element devices; and subclasses 165-212 for passive element wave filters.