US PATENT SUBCLASS 430 / 940
DIRECT POSITIVE MATERIAL
Current as of:
June, 1999
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430 /
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RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF
940
DIRECT POSITIVE MATERIAL
DEFINITION
Classification: 430/940
DIRECT POSITIVE MATERIAL:
Art collection involving a composition or product having material used to make a direct positive image.
SEE OR SEARCH THIS CLASS, SUBCLASS:
596, for a fogged direct positive.