US PATENT SUBCLASS 455 / 335
.~.~ Plural diverse function tube or stage (performs plural functions alternately or concurrently)

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
334  DF  .~ With particular receiver circuit {6}
335.~.~ Plural diverse function tube or stage (performs plural functions alternately or concurrently)

DEFINITION

Classification: 455/335

Plural diverse function tube or stage (performs plural functions alternately or concurrently):

(under subclass 334) Subject matter including at least one electron space discharge device which is provided with circuit means for performing at least two independent functions either simultaneously or selectively.