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经营范围
发明名称
LONGWALL MINING SYSTEM
摘要
申请公布号
GB2093504(B)
申请公布日期
1985.11.13
申请号
GB19820004929
申请日期
1982.02.19
申请人
FOSTER MILLER ASSOCIATES INC
发明人
分类号
E21C27/02;(IPC1-7):E21C27/02
主分类号
E21C27/02
代理机构
代理人
主权项
地址
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