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发明名称
D.C. MOTOR SPEED-CONTROL SYSTEM
摘要
申请公布号
GB9107715(D0)
申请公布日期
1991.05.29
申请号
GB19910007715
申请日期
1991.04.11
申请人
HUGH STEEPER LIMITED
发明人
分类号
主分类号
代理机构
代理人
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