US PATENT SUBCLASS 252 / 588
.~ Ultraviolet

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

582  DF  LIGHT TRANSMISSION MODIFYING COMPOSITIONS {6}
588.~ Ultraviolet {1}
589  DF  .~.~> Organic material

DEFINITION

Classification: 252/588

Ultraviolet:

(under subclass 582) Composition which affect the transmission of ultraviolet rays.