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发明名称
WELL PIPE HANGER
摘要
申请公布号
US3608632(A)
申请公布日期
1971.09.28
申请号
USD3608632
申请日期
1969.11.21
申请人
B & W INC.
发明人
JAMES R. SOLUM
分类号
E21B23/01;E21B23/06;E21B33/129;(IPC1-7):E21B23/00;E21B43/10
主分类号
E21B23/01
代理机构
代理人
主权项
地址
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