Dispositif pour former un écran d'isolation, notamment dans les galeries de mines,申请号FR19630926328-传众专利搜索

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发明名称	Dispositif pour former un écran d'isolation, notamment dans les galeries de mines
摘要
申请公布号	FR1357794(A)	申请公布日期	1964.04.10
申请号	FR19630926328	申请日期	1963.02.28
申请人	ETABLISSEMENTS BERRY SOCIETE ANONYME	发明人
分类号	E21F5/14	主分类号	E21F5/14
代理机构		代理人
主权项
地址

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