US PATENT SUBCLASS 455 / 314
.~.~ Plural separate successive conversions

Current as of: June, 1999
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130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
313  DF  .~ Frequency modifying or conversion {4}
314.~.~ Plural separate successive conversions {1}
315  DF  .~.~.~> With plural separate local oscillators {1}

DEFINITION

Classification: 455/314

Plural separate successive conversions:

(under subclass 313) Subject matter comprising a plurality of separate frequency modifying or conversion means or stages, the modulated input wave being passed through the frequency conversion stages in succession.