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发明名称
BORER FOR ANCHOR WORK
摘要
申请公布号
JPH0473324(A)
申请公布日期
1992.03.09
申请号
JP19900186469
申请日期
1990.07.13
申请人
DAIYONKI CHISHITSU KENKIYUUSHIYO:KK
发明人
FURUYA YOSHIJIRO;INADA MASAYUKI
分类号
E21B3/02;E02D17/20;E21B3/00;E21B7/02;E21B7/04;E21B15/00;E21B15/04;E21B19/08
主分类号
E21B3/02
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代理人
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