US PATENT SUBCLASS 455 / 139
.~.~.~.~ Frequency or phase control

Current as of: June, 1999
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130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
132  DF  .~ Plural receivers {4}
137  DF  .~.~ With output combining {1}
138  DF  .~.~.~ With control (e.g., automatic gain control) {1}
139.~.~.~.~ Frequency or phase control

DEFINITION

Classification: 455/139

Frequency or phase control:

(under subclass 138) Subject matter where the frequency or phase of an oscillator in the receiver is controlled.