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发明名称
Procédé thermo-mécanique de perforation des roches
摘要
申请公布号
FR1121955(A)
申请公布日期
1956.08.29
申请号
FRD1121955
申请日期
1955.01.08
申请人
发明人
BARD JEAN
分类号
E21B7/14
主分类号
E21B7/14
代理机构
代理人
主权项
地址
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