SET OF SCRAPER BUCKETS FOR THIN-BED MINING,申请号CS19890003666-传众专利搜索

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发明名称	SET OF SCRAPER BUCKETS FOR THIN-BED MINING
摘要
申请公布号	CS276489(B6)	申请公布日期	1992.06.17
申请号	CS19890003666	申请日期	1989.06.19
申请人	OKD - DUL HERMANICE	发明人	LAT FRANTISEK ING. CSC.
分类号	E21C27/42;(IPC1-7):E21C27/42	主分类号	E21C27/42
代理机构		代理人
主权项
地址

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