Improvements in ventilating and air supply systems,申请号GB19300002194-传众专利搜索

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发明名称	Improvements in ventilating and air supply systems
摘要
申请公布号	GB341275(A)	申请公布日期	1931.01.15
申请号	GB19300002194	申请日期	1930.01.22
申请人	THOMAS NEILSON;JOHN MARSHALL	发明人
分类号	B63J2/02	主分类号	B63J2/02
代理机构		代理人
主权项
地址

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