Device for cutting coal and other minerals,申请号GB19500019550-传众专利搜索

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发明名称	Device for cutting coal and other minerals
摘要
申请公布号	GB676059(A)	申请公布日期	1952.07.23
申请号	GB19500019550	申请日期	1950.08.04
申请人	DOROGI SZENBANYAK N. V.	发明人
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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