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发明名称
GERAET ZUR AUFZEICHNUNG UND WIEDERGABE VON SCHWINGUNGEN UNTER VERWENDUNG VON MAGNETISIERBAREN TONTRAEGERN.
摘要
申请公布号
DE1632325(U)
申请公布日期
1951.12.20
申请号
DE195100T1730U
申请日期
1951.10.27
申请人
TRANSFORMATOREN- UND APPARATEFABRIK PAUL METZ.
发明人
分类号
主分类号
代理机构
代理人
主权项
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