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发明名称
ZAEHLVORRICHTUNG AN PHOTOAPPARATEN.
摘要
申请公布号
DE1640543(U)
申请公布日期
1952.07.03
申请号
DE195200H7289U
申请日期
1952.03.20
申请人
WILHELM HOEHN
发明人
WILHELM HOEHN
分类号
主分类号
代理机构
代理人
主权项
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