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经营范围
发明名称
Improvements in or relating to arrangements for measuring and plotting periodically varying voltages and currents
摘要
申请公布号
GB382464(A)
申请公布日期
1932.10.27
申请号
GB19310035738
申请日期
1931.12.24
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
G01R13/04
主分类号
G01R13/04
代理机构
代理人
主权项
地址
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