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发明名称
A new or improved base member for use with hydraulic props
摘要
申请公布号
GB948154(A)
申请公布日期
1964.01.29
申请号
GB19590023579
申请日期
1959.07.09
申请人
HERBERT COTTERILL LIMITED
发明人
COTTERILL GERALD HERBERT
分类号
E21D15/48
主分类号
E21D15/48
代理机构
代理人
主权项
地址
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