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经营范围
发明名称
Improvements in or relating to winch drives, especially for cable-tool drills
摘要
申请公布号
GB765454(A)
申请公布日期
1957.01.09
申请号
GB19520007870
申请日期
1952.03.27
申请人
RUSTON-BUCYRUS LIMITED
发明人
分类号
B66D1/14;E21B1/02
主分类号
B66D1/14
代理机构
代理人
主权项
地址
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