US PATENT SUBCLASS 367 / 71
.~.~.~ CRT

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

14  DF  SEISMIC PROSPECTING {4}
37  DF  .~ Land-reflection type {6}
68  DF  .~.~ Display systems {4}
71.~.~.~ CRT

DEFINITION

Classification: 367/71

CRT:

(under subclass 68) Subject matter wherein the information or intelligence is displayed on a cathode-ray tube.