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发明名称
Slip anchored type well casing support and packing device
摘要
申请公布号
US2908514(A)
申请公布日期
1959.10.13
申请号
US19560580733
申请日期
1956.04.26
申请人
DAVIS MELVIN C
发明人
DAVIS MELVIN C.
分类号
E21B19/10
主分类号
E21B19/10
代理机构
代理人
主权项
地址
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