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发明名称
Phase sequence and voltage indicating means
摘要
申请公布号
US2128019(A)
申请公布日期
1938.08.23
申请号
US19350052302
申请日期
1935.11.30
申请人
SLEEPER HARVEY P
发明人
SLEEPER HARVEY P.
分类号
G01R13/00
主分类号
G01R13/00
代理机构
代理人
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地址
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