A device for the adjustable connection of lagging members for mine shafts with one another,申请号GB19510023967-传众专利搜索

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发明名称	A device for the adjustable connection of lagging members for mine shafts with one another
摘要
申请公布号	GB699938(A)	申请公布日期	1953.11.18
申请号	GB19510023967	申请日期	1951.10.15
申请人	JOSEF BRAND;CAMPBELL RITCHIE	发明人
分类号	E21D7/00	主分类号	E21D7/00
代理机构		代理人
主权项
地址

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