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发明名称
Mining machine
摘要
申请公布号
DE3230344(A1)
申请公布日期
1983.03.10
申请号
DE19823230344
申请日期
1982.08.14
申请人
DRESSER EUROPE S.A.
发明人
ALBERT PARROTT,GEORGE
分类号
E21C27/06;E21C27/02;E21C31/10;(IPC1-7):E21C27/00
主分类号
E21C27/06
代理机构
代理人
主权项
地址
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