Perfectionnements aux soutènements de toit de mine,申请号FR19610860723-传众专利搜索

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发明名称	Perfectionnements aux soutènements de toit de mine
摘要
申请公布号	FR1288521(A)	申请公布日期	1962.03.24
申请号	FR19610860723	申请日期	1961.05.04
申请人	GULLICK LIMITED	发明人
分类号	E21D17/02;E21D23/00	主分类号	E21D17/02
代理机构		代理人
主权项
地址

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