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发明名称
Alternating-current control apparatus with holding magnets
摘要
申请公布号
US2784352(A)
申请公布日期
1957.03.05
申请号
US19530338088
申请日期
1953.02.20
申请人
SIEMENS-SCHUCKERTWERKE AKTIENGESELLSCHAFT
发明人
DUFFING PAUL
分类号
H01H9/56
主分类号
H01H9/56
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