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发明名称
Well packer
摘要
申请公布号
US2851108(A)
申请公布日期
1958.09.09
申请号
US19560624102
申请日期
1956.11.23
申请人
TEXAS IRON WORKS, INC.
发明人
REED JOHN A.
分类号
E21B33/129
主分类号
E21B33/129
代理机构
代理人
主权项
地址
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