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发明名称
Method of forming underground communication between boreholes
摘要
申请公布号
US3058730(A)
申请公布日期
1962.10.16
申请号
US19600033738
申请日期
1960.06.03
申请人
FMC CORPORATION
发明人
BAYS CARL A.
分类号
E21B43/28
主分类号
E21B43/28
代理机构
代理人
主权项
地址
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