Rope haulage apparatus for mines,申请号US19480019796-传众专利搜索

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发明名称	Rope haulage apparatus for mines
摘要
申请公布号	US2523871(A)	申请公布日期	1950.09.26
申请号	US19480019796	申请日期	1948.04.08
申请人	MAVOR & COULSON, LIMITED	发明人	MAVOR JOHN BRIDIE
分类号	E21C29/08;E21F13/06	主分类号	E21C29/08
代理机构		代理人
主权项
地址

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