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经营范围
发明名称
ACOUSTIC DEVICE
摘要
申请公布号
GB1452541(A)
申请公布日期
1976.10.13
申请号
GB19740005292
申请日期
1974.02.05
申请人
ALLIED CHEMICAL CORPORATION
发明人
分类号
C22C5/04;B06B3/00;C22C5/06;C22C9/00;C22C19/00;C22C45/00;C22C45/02;C22C45/04;H01F1/12;H01F1/153;H01L41/20;H03H9/30;H03H9/36;(IPC1-7):H03H9/00;C22C5/00;C22C19/03;C22C27/06;C22C30/00
主分类号
C22C5/04
代理机构
代理人
主权项
地址
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