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发明名称
Hanger apparatus for well pipe
摘要
申请公布号
US3411588(A)
申请公布日期
1968.11.19
申请号
US19660605468
申请日期
1966.12.28
申请人
VENTURA TOOL COMPANY
发明人
HANES JAMES W. E.
分类号
E21B33/043;E21B37/00;E21B41/00
主分类号
E21B33/043
代理机构
代理人
主权项
地址
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