US PATENT SUBCLASS 358 / 485
.~.~.~ Cathode-ray tube

Current as of: June, 1999
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358 /   HD   FACSIMILE AND STATIC PRESENTATION PROCESSING

400  DF  FACSIMILE {17}
471  DF  .~ Picture signal generator {3}
474  DF  .~.~ Scanning {15}
485.~.~.~ Cathode-ray tube

DEFINITION

Classification: 358/485

Cathode-ray tube:

(under subclass 474) Subject matter having a vacuum tube

which focuses an electron beam on a luminescent screen.