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发明名称
Photographische Kamera mit eingebautem elektrischem Belichtungsmesser
摘要
申请公布号
DE678417(C)
申请公布日期
1939.07.14
申请号
DED678417D
申请日期
1930.08.27
申请人
ERWIN FALKENTHAL
发明人
分类号
G03B7/0993
主分类号
G03B7/0993
代理机构
代理人
主权项
地址
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