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发明名称
Ansetzbares Zusatzobjektivsystem fuer fotografische Kameras, die ausser dem Aufnahmeobjektiv ein zu dessen Einstellung dienendes Sucherobjektiv besitzen
摘要
申请公布号
DE718724(C)
申请公布日期
1942.03.19
申请号
DE1939P078932D
申请日期
1939.03.29
申请人
PLAUBEL VERKAUFSGESELLSCHAFT
发明人
SCHRADER GOETZ
分类号
G03B13/20
主分类号
G03B13/20
代理机构
代理人
主权项
地址
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