Ventilator noise deadener,申请号US19310576501-传众专利搜索

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发明名称	Ventilator noise deadener
摘要
申请公布号	US1922152(A)	申请公布日期	1933.08.15
申请号	US19310576501	申请日期	1931.11.21
申请人	BRADBURY GEORGE E	发明人	BRADBURY GEORGE E.
分类号	E06B7/03;F16L55/02	主分类号	E06B7/03
代理机构		代理人
主权项
地址

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