Combination air duct and girder for hot air ventilating system,申请号US19630260184-传众专利搜索

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发明名称	Combination air duct and girder for hot air ventilating system
摘要
申请公布号	US3236254(A)	申请公布日期	1966.02.22
申请号	US19630260184	申请日期	1963.02.21
申请人	VENUTI HENRY E	发明人	VENUTI HENRY E.
分类号	E04B9/02;F24F13/02	主分类号	E04B9/02
代理机构		代理人
主权项
地址

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