Dispositif d'assemblage à coin pour poteaux de mine en deux pièces et arcs de soutien de voûte de galeries en plusieurs pièces,申请号FRD825574-传众专利搜索

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发明名称	Dispositif d'assemblage à coin pour poteaux de mine en deux pièces et arcs de soutien de voûte de galeries en plusieurs pièces
摘要
申请公布号	FR825574(A)	申请公布日期	1938.03.07
申请号	FRD825574	申请日期	1937.08.14
申请人	GUTEHOFFNUNGSHU:TTE OBERHAUSEN AKTIENGESELLSCHAFT	发明人
分类号	E21D15/28	主分类号	E21D15/28
代理机构		代理人
主权项
地址

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