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发明名称
摘要
申请公布号
FR2329840(B1)
申请公布日期
1980.05.09
申请号
FR19760032024
申请日期
1976.10.22
申请人
CHEVRON RESEARCH CY
发明人
分类号
E21B36/00;E21B43/24;(IPC1-7):E21B43/16
主分类号
E21B36/00
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