Improvements in or relating to vacuum cleaners,申请号GB19370031945-传众专利搜索

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发明名称	Improvements in or relating to vacuum cleaners
摘要
申请公布号	GB485842(A)	申请公布日期	1938.05.25
申请号	GB19370031945	申请日期	1937.11.19
申请人	PAUL PFEIFFER;LUDWIG HAHN;ERNST FABER	发明人
分类号	A47L9/12;A47L9/22	主分类号	A47L9/12
代理机构		代理人
主权项
地址

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