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经营范围
发明名称
Improvements in or relating to impedance measurement
摘要
申请公布号
GB922760(A)
申请公布日期
1963.04.03
申请号
GB19590030519
申请日期
1959.09.07
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
分类号
G01R27/02
主分类号
G01R27/02
代理机构
代理人
主权项
地址
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