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发明名称
Werkstoff fuer Schallaufzeichnungen und Herstellungsverfahren fuer diesen Werkstoff
摘要
申请公布号
DE836113(C)
申请公布日期
1952.04.07
申请号
DE1948P021209
申请日期
1948.11.09
申请人
DUREX ABRASIVES LTD.
发明人
分类号
C09D5/23;G11B5/702
主分类号
C09D5/23
代理机构
代理人
主权项
地址
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