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发明名称
Long-Wall Mining Installations
摘要
申请公布号
GB1169240(A)
申请公布日期
1969.10.29
申请号
GB19680037016
申请日期
1967.08.11
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIA
发明人
分类号
E21D23/04
主分类号
E21D23/04
代理机构
代理人
主权项
地址
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