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发明名称
摘要
申请公布号
NL6912166(A)
申请公布日期
1971.02.11
申请号
NL19690012166
申请日期
1969.08.09
申请人
发明人
分类号
G01T1/16;G03G5/16;H01F21/06;H01Q3/44;H03H5/12;H03H7/01;(IPC1-7):G03G5/00;H01Q9/02;H01F17/04;H03H5/08
主分类号
G01T1/16
代理机构
代理人
主权项
地址
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