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发明名称
COVERING CYLINDRICAL WALL FOR DRILLING HOLE
摘要
申请公布号
JPH0249898(A)
申请公布日期
1990.02.20
申请号
JP19890109567
申请日期
1989.04.28
申请人
ISHIKAWAJIMA CONSTR MATERIALS CO LTD
发明人
OZEKI MUNETAKA;TAKADAISHI YOSHIO
分类号
E21D11/08;E21D11/04
主分类号
E21D11/08
代理机构
代理人
主权项
地址
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