Title:
Photographic elements having antihalation layers composed of vinylpyridine polymers and antihalation materials
United States Patent 2448542
US Patent References:
Photographic film
- - 2000587

Photographic elements containing antihalation layers
- - 2182794


Inventors:
Malcolm, Mcqueen David
Clay, Weaver
Publication Date:
09/07/1948
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Assignee:
Pont DU.
Primary Class:
430/517
Other Classes:
430/536, 526/265, 526/270
International Classes:
G03C1/835; G03C1/825