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发明名称
摘要
申请公布号
JP2592076(B2)
申请公布日期
1997.03.19
申请号
JP19870266530
申请日期
1987.10.23
申请人
MITSUBISHI HEAVY IND LTD
发明人
SAITO YASUO;MIZUTA SADACHIKA
分类号
E21B11/00;E21B4/18;E21B17/10;(IPC1-7):E21B11/00
主分类号
E21B11/00
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