WORKING UNIT OF MECHANICAL COAL MINER,申请号PL19830241213-传众专利搜索

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发明名称	WORKING UNIT OF MECHANICAL COAL MINER
摘要
申请公布号	PL139847(B1)	申请公布日期	1987.02.28
申请号	PL19830241213	申请日期	1983.03.25
申请人		发明人
分类号	E21C;E21C25/10;E21C27/02;(IPC1-7):E21C25/10	主分类号	E21C
代理机构		代理人
主权项
地址

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