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发明名称
Speed control for a series wound electric motor
摘要
申请公布号
US2799819(A)
申请公布日期
1957.07.16
申请号
US19540424476
申请日期
1954.04.19
申请人
BROWN WALTER J
发明人
BROWN WALTER J.
分类号
H02P7/30
主分类号
H02P7/30
代理机构
代理人
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地址
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