Barrage anti-grisou à récipients d'eau,申请号FR19670119173-传众专利搜索

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发明名称	Barrage anti-grisou à récipients d'eau
摘要
申请公布号	FR1538713(A)	申请公布日期	1968.09.06
申请号	FR19670119173	申请日期	1967.08.28
申请人		发明人	NICOLAS LOTHAR
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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