US PATENT SUBCLASS 330 / 190-- .~.~ With transformer structure

US PATENT SUBCLASS 330 / 190
.~.~ With transformer structure

Current as of: June, 1999
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330 /	HD	AMPLIFIERS

185	DF	INPUT NETWORKS {3}
188	DF	.~ Transformer coupled {2}
190		.~.~ With transformer structure

DEFINITION

Classification: 330/190

(under subclass 188) Subject matter involving the structure of the transformer in the input coupling circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65+, for structure of amplifier system elements other than that of the transformer.

170, for interstage transformer coupling with shielding.

171, for interstage transformer structure.

197, for structure of the transformer in the output coupling.

SEE OR SEARCH CLASS 336, Inductor Devices, appropriate subclasses for transformer structure, per se.