Improvements in porthole ventilators,申请号GB19450000845-传众专利搜索

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发明名称	Improvements in porthole ventilators
摘要
申请公布号	GB595415(A)	申请公布日期	1947.12.04
申请号	GB19450000845	申请日期	1945.01.10
申请人	ILG ELECTRIC VENTILATING COMAPNY	发明人
分类号	B63B19/04	主分类号	B63B19/04
代理机构		代理人
主权项
地址

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