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发明名称
METHOD OF JOINING TUNNELS
摘要
申请公布号
JPH04169698(A)
申请公布日期
1992.06.17
申请号
JP19900297951
申请日期
1990.11.02
申请人
SHIMIZU CORP
发明人
KAZAMA HIROSHI;NEGAMI YOSHIAKI
分类号
E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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