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发明名称
SHAFT EXCAVATION METHOD
摘要
申请公布号
JPS62236992(A)
申请公布日期
1987.10.17
申请号
JP19860080320
申请日期
1986.04.08
申请人
HITACHI ZOSEN CORP
发明人
ITONAGA HIROSHI;UTO YOSHIHIRO
分类号
E21D1/03
主分类号
E21D1/03
代理机构
代理人
主权项
地址
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