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发明名称
Apparatus and material for core orientation
摘要
申请公布号
US3291226(A)
申请公布日期
1966.12.13
申请号
US19640421062
申请日期
1964.12.24
申请人
WINKEL DAVID E
发明人
WINKEL DAVID E.
分类号
E21B25/08;E21B25/16;E21B47/026
主分类号
E21B25/08
代理机构
代理人
主权项
地址
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