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发明名称
ROCK DRILLING EQUIPMENT FOR TUNNEL EXCAVATION
摘要
申请公布号
JPS56142995(A)
申请公布日期
1981.11.07
申请号
JP19810034027
申请日期
1981.03.11
申请人
ATLAS COPCO AB
发明人
RORUNE ROBAATO HERON
分类号
E21D9/10;E21B7/02;E21B15/00;E21B19/08
主分类号
E21D9/10
代理机构
代理人
主权项
地址
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