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发明名称
Articulation rigide pour soutènement métallique de galeries de mines
摘要
申请公布号
FR1050165(A)
申请公布日期
1954.01.05
申请号
FRD1050165
申请日期
1952.02.04
申请人
WESTFALENHU:TTE A. G.;LORENZ-POLYGON-AUSBAU G.M.B.H.
发明人
分类号
E21D11/24
主分类号
E21D11/24
代理机构
代理人
主权项
地址
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