Improvements relating to air impellers or fans,申请号GB19440011171-传众专利搜索

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发明名称	Improvements relating to air impellers or fans
摘要
申请公布号	GB581956(A)	申请公布日期	1946.10.30
申请号	GB19440011171	申请日期	1944.06.12
申请人	JOHN NEWTON COLLINS	发明人
分类号	F04D29/38	主分类号	F04D29/38
代理机构		代理人
主权项
地址

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