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发明名称
摘要
PURPOSE:Dynamic control system for crane,in which,electric source switching time is very short to reduce free run time.
申请公布号
JPS5443256(B2)
申请公布日期
1979.12.19
申请号
JP19750079386
申请日期
1975.06.27
申请人
发明人
分类号
H02P23/00;B66C13/18;B66C13/23
主分类号
H02P23/00
代理机构
代理人
主权项
地址
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