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发明名称
Verfahren zur Herstellung von mit Rueckdrehung der Paare verseilten DM-Vierern
摘要
申请公布号
DE514870(C)
申请公布日期
1930.12.29
申请号
DE1927E035501D
申请日期
1927.04.08
申请人
DR. WALTHER EHLERS
发明人
分类号
H01B11/00
主分类号
H01B11/00
代理机构
代理人
主权项
地址
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