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经营范围
发明名称
Mining machines
摘要
申请公布号
GB1085658(A)
申请公布日期
1967.10.04
申请号
GB19660008783
申请日期
1966.02.28
申请人
LEE-NORSE COMPANY
发明人
分类号
E21C31/04
主分类号
E21C31/04
代理机构
代理人
主权项
地址
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