Screw fan ventilator,申请号US19350046593-传众专利搜索

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发明名称	Screw fan ventilator
摘要
申请公布号	US2048985(A)	申请公布日期	1936.07.28
申请号	US19350046593	申请日期	1935.10.24
申请人	WINSOR AXIA FANS LIMITED	发明人	AKESTER JOSEPH CUTHBERT
分类号	F04D25/12	主分类号	F04D25/12
代理机构		代理人
主权项
地址

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