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发明名称
DIFFERENTIAL PRESSURE TOOLS FOR PLUGGING HOLES IN WELL PIPE
摘要
申请公布号
US3614988(A)
申请公布日期
1971.10.26
申请号
USD3614988
申请日期
1969.07.30
申请人
LAWRENCE K. MOORE
发明人
LAWRENCE K. MOORE
分类号
E21B33/134;(IPC1-7):E21B33/13
主分类号
E21B33/134
代理机构
代理人
主权项
地址
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