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发明名称
Improvements relating to the control of electric motors driving grab hoists
摘要
申请公布号
GB616713(A)
申请公布日期
1949.01.26
申请号
GB19460020884
申请日期
1946.07.12
申请人
KARE RAGNVALD HALVORSEN
发明人
分类号
B66C13/18
主分类号
B66C13/18
代理机构
代理人
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