Procédé pour indiquer automatiquement le danger de la formation de nappes de méthane,申请号FR19660048135-传众专利搜索

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发明名称	Procédé pour indiquer automatiquement le danger de la formation de nappes de méthane
摘要
申请公布号	FR1466885(A)	申请公布日期	1967.01.20
申请号	FR19660048135	申请日期	1966.02.02
申请人	BERGWERKSVERBAND G. M. B. H.	发明人
分类号	E21F17/18	主分类号	E21F17/18
代理机构		代理人
主权项
地址

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