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发明名称
Redirecting deflected boreholes
摘要
申请公布号
US2950900(A)
申请公布日期
1960.08.30
申请号
US19560615389
申请日期
1956.10.11
申请人
WYNES ALFRED C
发明人
WYNES ALFRED C.
分类号
E21B7/10
主分类号
E21B7/10
代理机构
代理人
主权项
地址
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