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发明名称
摘要
申请公布号
FR2478158(B1)
申请公布日期
1983.07.29
申请号
FR19800005968
申请日期
1980.03.14
申请人
MAUREY JACQUES
发明人
分类号
E02D1/04;E02D5/56;E21B10/44;(IPC1-7):E02D7/22;E21B10/02
主分类号
E02D1/04
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