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发明名称
Thermal packer construction
摘要
申请公布号
US3381969(A)
申请公布日期
1968.05.07
申请号
US19650429456
申请日期
1965.02.01
申请人
DRESSER INDUSTRIES, INC.
发明人
CROW MORGAN L.;KILGORE MARION D.;SIMPSON HARRY E.
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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