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发明名称
Differential relaying system
摘要
申请公布号
US1953108(A)
申请公布日期
1934.04.03
申请号
US19330651835
申请日期
1933.01.14
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
HARDER EDWIN L.
分类号
H02H3/30
主分类号
H02H3/30
代理机构
代理人
主权项
地址
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