Perfectionnements aux prolonges de soutènement, notamment pour les mines ou les chantiers souterrains,申请号FR19666947901-传众专利搜索

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发明名称	Perfectionnements aux prolonges de soutènement, notamment pour les mines ou les chantiers souterrains
摘要
申请公布号	FR1506527(A)	申请公布日期	1967.12.22
申请号	FR19666947901	申请日期	1966.11.03
申请人	BENNES MARREL	发明人	BORE RAYMOND
分类号	E21D23/06	主分类号	E21D23/06
代理机构		代理人
主权项
地址

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