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经营范围
发明名称
Mining apparatus
摘要
申请公布号
GB994969(A)
申请公布日期
1965.06.10
申请号
GB19610006921
申请日期
1961.02.24
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
PATTS MICHAEL CHARLES
分类号
E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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