Dispositif pour former un écran d'isolation, notamment dans les galeries de mines.,申请号FR19670131827-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	FR95478(E)	申请公布日期	1971.01.15
申请号	FR19670131827	申请日期	1967.12.12
申请人	ETABLISSEMENTS BERRY SOCIETE ANONYME	发明人
分类号	E21F5/14;(IPC1-7):E21F/	主分类号	E21F5/14
代理机构		代理人
主权项
地址

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