APPARATUS FOR COMBINED MECHANICAL AND HYDRAULIC WINNING OF COAL OR SIMILAR MINERALS IN UNDERGROUND MINESAVLICHESKOJJ OTBOJJKI UGLJA ILI PODOBNYKH MINERALOV W PROCESSE SHAKHTNYKH RABOT,申请号PL19780211023-传众专利搜索

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发明名称	APPARATUS FOR COMBINED MECHANICAL AND HYDRAULIC WINNING OF COAL OR SIMILAR MINERALS IN UNDERGROUND MINESAVLICHESKOJJ OTBOJJKI UGLJA ILI PODOBNYKH MINERALOV W PROCESSE SHAKHTNYKH RABOT
摘要
申请公布号	PL117336(B1)	申请公布日期	1981.07.31
申请号	PL19780211023	申请日期	1978.11.17
申请人		发明人
分类号	E21C25/60;E21C27/18;E21C27/34;(IPC1-7):E21C27/32	主分类号	E21C25/60
代理机构		代理人
主权项
地址

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