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发明名称
Electric valve protective system
摘要
申请公布号
US2109865(A)
申请公布日期
1938.03.01
申请号
US19340756409
申请日期
1934.12.07
申请人
AKTIENGESELLSCHAFT BROWN BOVERI & CIE.
发明人
MERTENS FRANZ
分类号
H02H7/127
主分类号
H02H7/127
代理机构
代理人
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地址
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