US PATENT SUBCLASS 313 / 512
.~.~ With envelope or encapsulation

Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

483  DF  WITH LUMINESCENT SOLID OR LIQUID MATERIAL {4}
498  DF  .~ Solid-state type {8}
512.~.~ With envelope or encapsulation

DEFINITION

Classification: 313/512

(under subclass 498) Subject matter including protective envelope or encapsulation means surrounding the luminescent material.