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发明名称
Photographic composition containing unsymmetrical diacylacetpolyamino-arylides and color development processes
摘要
申请公布号
US2319426(A)
申请公布日期
1943.05.18
申请号
US19390284342
申请日期
1939.07.13
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
MIDDLETON EDMUND B.;JENNINGS ANDREW B.
分类号
G03C7/36
主分类号
G03C7/36
代理机构
代理人
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地址
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