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发明名称
METHOD OF CONSTRUCTING TUNNEL
摘要
申请公布号
JPS63171994(A)
申请公布日期
1988.07.15
申请号
JP19870001420
申请日期
1987.01.07
申请人
NIPPON STEEL CORP
发明人
OKIMOTO MASAYUKI;FUJII YASUMORI
分类号
E21D9/00;E21D9/04
主分类号
E21D9/00
代理机构
代理人
主权项
地址
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