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发明名称
Einrichtung zur Ermittlung der erforderlichen Belichtungszeit bei der Herstellung von photographischen Vergroesserungen
摘要
申请公布号
DE847248(C)
申请公布日期
1952.08.21
申请号
DE1948P005456
申请日期
1948.10.02
申请人
KNOBLOCH HANS
发明人
KNOBLOCH HANS
分类号
G01J1/42
主分类号
G01J1/42
代理机构
代理人
主权项
地址
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