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发明名称
METHOD OF ROCK EXCAVATION SIMULTANEOUS PIPE PUSH-IN CONSTRUCTION
摘要
申请公布号
JPH01142194(A)
申请公布日期
1989.06.05
申请号
JP19870299681
申请日期
1987.11.30
申请人
SUMITOMO COAL MINING CO LTD;TOKYO RIYUUKI SEIZO KK
发明人
KAMEI AKIHIKO;ITO AKIRA
分类号
E21D9/06;E21D9/08
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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