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发明名称
Electric motor control system
摘要
申请公布号
US2021239(A)
申请公布日期
1935.11.19
申请号
US19350004457
申请日期
1935.02.01
申请人
CUTLER-HAMMER, INC.
发明人
LOCKETT RALPH G.
分类号
H02P1/54
主分类号
H02P1/54
代理机构
代理人
主权项
地址
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