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发明名称
Three-phase power direction indicating means
摘要
申请公布号
US2130573(A)
申请公布日期
1938.09.20
申请号
US19350022222
申请日期
1935.05.18
申请人
ROLF WIDEROE
发明人
WIDEROE ROLF
分类号
G01R5/20
主分类号
G01R5/20
代理机构
代理人
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