Perfectionnements aux jupes de protection de coussins de soutènement utilisés en particulier dans les mines,申请号FR19670098422-传众专利搜索

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发明名称	Perfectionnements aux jupes de protection de coussins de soutènement utilisés en particulier dans les mines
摘要
申请公布号	FR1521655(A)	申请公布日期	1968.04.19
申请号	FR19670098422	申请日期	1967.03.10
申请人	MICHELIN & COMPAGNIE	发明人
分类号	E21D15/54;E21D15/55	主分类号	E21D15/54
代理机构		代理人
主权项
地址

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