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经营范围
发明名称
MINING EQUIPMENT
摘要
申请公布号
GB1553431(A)
申请公布日期
1979.09.26
申请号
GB19760035913
申请日期
1977.08.15
申请人
LOCKWOOD BENNETT LTD
发明人
分类号
E21D9/10;E21D9/12;(IPC1-7):E21C37/00
主分类号
E21D9/10
代理机构
代理人
主权项
地址
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