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经营范围
发明名称
Photographic emulsion
摘要
申请公布号
US2185798(A)
申请公布日期
1940.01.02
申请号
US19380223873
申请日期
1938.08.09
申请人
RENE STEVENS
发明人
STEVENS RENE
分类号
G03C1/12
主分类号
G03C1/12
代理机构
代理人
主权项
地址
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