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发明名称
Cadre de soutènement élastique en fer, en forme d'arc, fait de profilés en doublet, rails, etc., à ailes égales ou inégales, pour galerie de mine
摘要
申请公布号
FR905691(A)
申请公布日期
1945.12.11
申请号
FRD905691
申请日期
1944.07.06
申请人
AUGUST THYSSEN-HU:TTE A. G.
发明人
分类号
E21D11/22
主分类号
E21D11/22
代理机构
代理人
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地址
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