DEVICE FOR REGULATING MINING FAN NOZZLES,申请号PL19770202585-传众专利搜索

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发明名称	DEVICE FOR REGULATING MINING FAN NOZZLES
摘要
申请公布号	PL108904(B1)	申请公布日期	1980.05.31
申请号	PL19770202585	申请日期	1977.11.30
申请人		发明人
分类号	E21F;E21F1/08;F24F11/04;G05D7/01;(IPC1-7):E21F1/08	主分类号	E21F
代理机构		代理人
主权项
地址

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