US PATENT SUBCLASS 313 / 460
.~.~.~ Plural
Current as of:
June, 1999
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313 /
HD
ELECTRIC LAMP AND DISCHARGE DEVICES
364
DF
CATHODE RAY TUBE
{11}
441
DF
.~ Ray generating or control {6}
458
DF
.~.~ Electrode {2}
460
.~.~.~ Plural
DEFINITION
Classification: 313/460
(under subclass 458) Subject matter including more than one electrode.