Improvements in or relating to mining machines,申请号GB19600003344-传众专利搜索

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发明名称	Improvements in or relating to mining machines
摘要
申请公布号	GB842701(A)	申请公布日期	1960.07.27
申请号	GB19600003344	申请日期	1956.05.29
申请人	THE COLMOL COMPANY	发明人	SNYDER CLIFFORD HUTCHISON;FUNK HARRY CALVIN
分类号	E21C27/22	主分类号	E21C27/22
代理机构		代理人
主权项
地址

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