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发明名称
Pressure actuated pushing apparatus
摘要
申请公布号
US3244232(A)
申请公布日期
1966.04.05
申请号
US19630273236
申请日期
1963.04.15
申请人
BAKER OIL TOOLS, INC.
发明人
MYERS WILLIAM D.
分类号
E21B23/06
主分类号
E21B23/06
代理机构
代理人
主权项
地址
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