US PATENT SUBCLASS 313 / 495
.~ Vacuum-type tube
Current as of:
June, 1999
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ELECTRIC LAMP AND DISCHARGE DEVICES
483
DF
WITH LUMINESCENT SOLID OR LIQUID MATERIAL
{4}
495
.~ Vacuum-type tube {1}
496
DF
.~.~
> Phosphor on anode segments {1}
DEFINITION
Classification: 313/495
(under subclass 483) Subject matter including an evacuated envelope, a fluorescent or phosphorescent material within the envelope, an electron source, and an anode cooperating to bombard the fluorescent or phosphorescent material.