Improvements in lagging irons for mines,申请号GB19530010422-传众专利搜索

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发明名称	Improvements in lagging irons for mines
摘要
申请公布号	GB726000(A)	申请公布日期	1955.03.16
申请号	GB19530010422	申请日期	1953.04.16
申请人	USINES ET ACIERIES LEONARD-GIOT	发明人
分类号	E21D17/086	主分类号	E21D17/086
代理机构		代理人
主权项
地址

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