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发明名称
Scherenspreizen-Verstrebung an photographischen Kameras
摘要
申请公布号
DE566190(C)
申请公布日期
1932.12.13
申请号
DE1931N031969D
申请日期
1931.04.28
申请人
DR. AUGUST NAGEL
发明人
分类号
G03B17/04
主分类号
G03B17/04
代理机构
代理人
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