Perfectionnements apportés aux cadres de soutènement pour couloirs d'abattage de mines,申请号BE19610607969-传众专利搜索

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发明名称	Perfectionnements apportés aux cadres de soutènement pour couloirs d'abattage de mines
摘要
申请公布号	BE607969(A1)	申请公布日期	1962.03.08
申请号	BE19610607969	申请日期	1961.09.08
申请人	BOCHUMER EISENHUETTE HEINTZMANN & CO.	发明人
分类号	(IPC1-7):E21D	主分类号	(IPC1-7):E21D
代理机构		代理人
主权项
地址

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