US PATENT SUBCLASS 252 / 646
.~ Luminescent


Current as of: June, 1999
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252 /   HD   COMPOSITIONS

625  DF  RADIOACTIVE COMPOSITIONS {4}
646.~ Luminescent {1}
647  DF  .~.~> Laser


DEFINITION

Classification: 252/646

Luminescent:

(under subclass 625) Subject matter containing matter having the property of emitting light or analogous rays as a result of irradiation by wave energy radiated by some other source.

SEE OR SEARCH THIS CLASS, SUBCLASS:

301.16+, 301.36 and 301.4+, for fluorescent or phophorescent compositions.

644, for compositions which emit nonvisible or high energy rays.