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经营范围
发明名称
Beidseitig beschichteter photographischer Film
摘要
申请公布号
DE656255(C)
申请公布日期
1938.02.01
申请号
DE1933K130064D
申请日期
1933.05.07
申请人
HEINRICH KUEHN
发明人
分类号
G03C1/46
主分类号
G03C1/46
代理机构
代理人
主权项
地址
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