Improvements in mining machines,申请号GB19300033853-传众专利搜索

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发明名称	Improvements in mining machines
摘要
申请公布号	GB372741(A)	申请公布日期	1932.05.10
申请号	GB19300033853	申请日期	1930.11.10
申请人	SULLIVAN MACHINERY COMPANY	发明人
分类号	E21C29/10	主分类号	E21C29/10
代理机构		代理人
主权项
地址

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