US PATENT SUBCLASS 252 / 583
.~ Modification caused by energy other than light

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

582  DF  LIGHT TRANSMISSION MODIFYING COMPOSITIONS {6}
583.~ Modification caused by energy other than light

DEFINITION

Classification: 252/583

Modification caused by energy other than light:

(under subclass 582) Composition wherein the transmission property change is occasioned by use of energy other than light, e.g., heat, electricity, etc.