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发明名称
Vorrichtung an einem Pantographen zur Herstellung einer negativen Kopie von einem positiven Modell
摘要
申请公布号
DE520282(C)
申请公布日期
1931.03.09
申请号
DED520282D
申请日期
申请人
AARNE DAHLSTROEM
发明人
分类号
B44B3/06
主分类号
B44B3/06
代理机构
代理人
主权项
地址
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