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经营范围
发明名称
POWER FACTOR MEASURING CIRCUIT
摘要
申请公布号
PL156569(B1)
申请公布日期
1992.03.31
申请号
PL19870268960
申请日期
1987.11.20
申请人
发明人
分类号
G01R;G01R21/00;G01R21/06;(IPC1-7):G01R21/06
主分类号
G01R
代理机构
代理人
主权项
地址
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