WORM-TYPE WINNING UNIT FOR COMBINED COAL CUTTER LOADERS,申请号PL19790215860-传众专利搜索

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发明名称	WORM-TYPE WINNING UNIT FOR COMBINED COAL CUTTER LOADERS
摘要
申请公布号	PL117484(B2)	申请公布日期	1981.08.31
申请号	PL19790215860	申请日期	1979.05.24
申请人		发明人
分类号	E21C;E21C25/10;(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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