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发明名称
Extensible hydraulic supports
摘要
申请公布号
US2985418(A)
申请公布日期
1961.05.23
申请号
US19590843977
申请日期
1959.10.02
申请人
MASTABAR MINING EQUIPMENT COMPANY LIMITED
发明人
TEBB BERNARD;PERRY CLARENCE HERBERT
分类号
E21D15/44
主分类号
E21D15/44
代理机构
代理人
主权项
地址
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