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发明名称
摘要
申请公布号
FR2330803(B1)
申请公布日期
1982.09.10
申请号
FR19760033115
申请日期
1976.11.03
申请人
PANDROL LTD
发明人
分类号
E01B9/48;E01B9/08;E01B9/30;(IPC1-7):E01B9/62
主分类号
E01B9/48
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