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发明名称
Self-advancing support structure for a mine gallery roof
摘要
申请公布号
GB1004110(A)
申请公布日期
1965.09.08
申请号
GB19620022100
申请日期
1962.06.07
申请人
MARGOT VON LINSINGEN
发明人
分类号
E21D23/00;E21D23/03;E21D23/04
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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