US PATENT SUBCLASS 252 / 587
.~ Infrared
Current as of:
June, 1999
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252 /
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COMPOSITIONS
582
DF
LIGHT TRANSMISSION MODIFYING COMPOSITIONS
{6}
587
.~ Infrared
DEFINITION
Classification: 252/587
Infrared:
(under subclass 582) Composition which affect the transmission of infrared rays.