METHOD OF REDUCING DUSTINESS OF AIR IN COAL MINES AND APPARATUS THEREFOR,申请号PL19810232522-传众专利搜索

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发明名称	METHOD OF REDUCING DUSTINESS OF AIR IN COAL MINES AND APPARATUS THEREFOR
摘要
申请公布号	PL134481(B1)	申请公布日期	1985.08.31
申请号	PL19810232522	申请日期	1981.08.06
申请人		发明人
分类号	B01D45/16;B04C3/04;E21C35/22;E21F5/20;(IPC1-7):E21C35/22;B01D47/00	主分类号	B01D45/16
代理机构		代理人
主权项
地址

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