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发明名称
Verfahren, um wachs- oder seifenähnliche Stoffe elektrisch leitend, insbesondere für die Herstellung von Matrizen für Sprechmaschinenplatten geeignet zu machen.
摘要
申请公布号
AT117452(B)
申请公布日期
1930.04.25
申请号
ATD117452
申请日期
1928.02.16
申请人
THE GRAMOPHONE COMPANY, LIMITED
发明人
分类号
主分类号
代理机构
代理人
主权项
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