US PATENT SUBCLASS 455 / 253.2
.~.~.~.~ Plural amplifier stages

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
230  DF  .~ Local control of receiver operation {7}
232.1  DF  .~.~ Gain control {2}
234.1  DF  .~.~.~ Automatic {15}
253.2.~.~.~.~ Plural amplifier stages

DEFINITION

Classification: 455/253.2

Plural amplifier stages:

(under subclass 234.1) Subject matter including two or more gain stages.