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经营范围
发明名称
Direct current motor control
摘要
申请公布号
US2635220(A)
申请公布日期
1953.04.14
申请号
US19510233999
申请日期
1951.06.28
申请人
DUPY OLIN L
发明人
DUPY OLIN L.
分类号
H02P7/06
主分类号
H02P7/06
代理机构
代理人
主权项
地址
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