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发明名称
Filterhalter fuer photographische Zwecke
摘要
申请公布号
DE660260(C)
申请公布日期
1938.05.20
申请号
DE1936SC11316D
申请日期
1936.11.05
申请人
HERMANN SCHADOCK
发明人
SCHADOCK HERMANN
分类号
G03B17/12
主分类号
G03B17/12
代理机构
代理人
主权项
地址
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