US PATENT SUBCLASS 455 / 288-- .~.~.~.~ Particular composition (e.g., of cell or element)

US PATENT SUBCLASS 455 / 288
.~.~.~.~ Particular composition (e.g., of cell or element)

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}
288		.~.~.~.~ Particular composition (e.g., of cell or element)

DEFINITION

Classification: 455/288

Particular composition (e.g., of cell or element):

(under subclass 283) Subject matter wherein the significant noise and/or static reduction or elimination means comprises an element utilizing a material or composition which conducts or varies its impedance selectively so as to attenuate the noise or static energy and permit message of the desired signal without attenuation.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), appropriate subclasses for specific active solid- state devices which show nonlinear behavior.