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发明名称
摘要
申请公布号
JPS6249434(B2)
申请公布日期
1987.10.19
申请号
JP19800029822
申请日期
1980.03.11
申请人
KAJIMA CORP
发明人
UCHIDA SEIICHI;HISAIE HIROSHI;MATSUI NOBUYUKI
分类号
E21B17/20;E21B7/00
主分类号
E21B17/20
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代理人
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