US PATENT SUBCLASS 708 / 701-- .~.~.~.~.~ Bipolar junction transistor only or combined with Field-Effect Transistor

US PATENT SUBCLASS 708 / 701
.~.~.~.~.~ Bipolar junction transistor only or combined with Field-Effect Transistor

Current as of: June, 1999
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708 /	HD	ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING

100	DF	ELECTRICAL DIGITAL CALCULATING COMPUTER {10}
200	DF	.~ Particular function performed {26}
490	DF	.~.~ Arithmetical operation {27}
670	DF	.~.~.~ Addition/subtraction {11}
700	DF	.~.~.~.~ Binary {6}
701		.~.~.~.~.~ Bipolar junction transistor only or combined with Field-Effect Transistor

DEFINITION

Classification: 708/701

Bipolar junction transistor only or combined with Field-Effect Transistor:

(under subclass 700) Subject matter including a transistor that uses both negative and positive charge carriers or combined with a transistor in which current carriers (holes or electrons) are injected at one terminal (the source) and pass to another (the drain) through a channel of semiconductor material whose resistivity depends mainly on the extent to which it is penetrated by a depletion region.