Improvements in or relating to ceiling ventilators,申请号GB19380034648-传众专利搜索

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发明名称	Improvements in or relating to ceiling ventilators
摘要
申请公布号	GB521866(A)	申请公布日期	1940.06.03
申请号	GB19380034648	申请日期	1938.11.28
申请人	PATENTVERWERTUNGS - GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG "HERMES"	发明人
分类号	F04D25/06	主分类号	F04D25/06
代理机构		代理人
主权项
地址

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