US PATENT SUBCLASS 252 / 584
.~ Inorganic crystalline solid

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

582  DF  LIGHT TRANSMISSION MODIFYING COMPOSITIONS {6}
584.~ Inorganic crystalline solid

DEFINITION

Classification: 252/584

Inorganic crystalline solid:

(under subclass 582) Composition in the form of an inorganic crystalline solid material.