US PATENT SUBCLASS 330 / 300-- .~.~ Bipolar or unipolar (FET)

US PATENT SUBCLASS 330 / 300
.~.~ Bipolar or unipolar (FET)

Current as of: June, 1999
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330 /	HD	AMPLIFIERS

250	DF	WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) {21}
299	DF	.~ Including combined diverse-type semiconductor device {1}
300		.~.~ Bipolar or unipolar (FET)

DEFINITION

Classification: 330/300

Bipolar or unipolar (FET):

(under subclass 299) Subject matter wherein the additional semiconductor device may be a bipolar or unipolar transistor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

253, for field effect transistor (FET) in combination with a differential amplifier.

264, for FET in combination with complementary symmetry push-pull amplifiers.

269, for FET in combination with other push-pull amplifiers.

277, for other field effect transistors.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, 581, for miscellaneous FET circuits.