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发明名称
METHOD OF COVERING TUNNEL
摘要
申请公布号
JPS5673799(A)
申请公布日期
1981.06.18
申请号
JP19790150726
申请日期
1979.11.22
申请人
NIPPON STEEL CORP;NIPPON SHIIRUDO ENGINEERING KK
发明人
SUNAMI TAKESHI;TOYODA TOSHINORI
分类号
E21D11/00;E21D11/04;E21D11/10
主分类号
E21D11/00
代理机构
代理人
主权项
地址
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