US PATENT SUBCLASS 358 / 521
.~.~ Gradation
Current as of:
June, 1999
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358 /
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FACSIMILE AND STATIC PRESENTATION PROCESSING
500
DF
NATURAL COLOR FACSIMILE
{12}
518
DF
.~ Color correction {5}
521
.~.~ Gradation
DEFINITION
Classification: 358/521
Gradation:
(under subclass 518) Subject matter for controlling an optical color density of an image.