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经营范围
发明名称
MINING INSTALLATION
摘要
申请公布号
GB1471311(A)
申请公布日期
1977.04.21
申请号
GB19740016602
申请日期
1974.04.16
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIEA
发明人
分类号
E21C35/12;E21D23/04;(IPC1-7):E21C35/12
主分类号
E21C35/12
代理机构
代理人
主权项
地址
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