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发明名称
LINER HANGER PACKER
摘要
申请公布号
US3460617(A)
申请公布日期
1969.08.12
申请号
USD3460617
申请日期
1967.04.05
申请人
BROWN OIL TOOLS INC.
发明人
JOE R. BROWN;JAMES W. MONTGOMERY
分类号
E21B23/04;E21B33/129;(IPC1-7):E21B33/12;E21B23/00
主分类号
E21B23/04
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