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发明名称
Einrichtung zum selbsttaetigen Einstellen des Tonarmes nach der Plattengroesse fuer Sprechmaschinen
摘要
申请公布号
DE510949(C)
申请公布日期
1930.10.24
申请号
DE1928P059236D
申请日期
1928.08.01
申请人
POLYPHONWERKE A.-G.
发明人
分类号
G11B17/02
主分类号
G11B17/02
代理机构
代理人
主权项
地址
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