Air vent device for steam radiators,申请号US19570700120-传众专利搜索

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发明名称	Air vent device for steam radiators
摘要
申请公布号	US3022860(A)	申请公布日期	1962.02.27
申请号	US19570700120	申请日期	1957.12.02
申请人	BITTNER CHARLES C	发明人	BITTNER CHARLES C.
分类号	F24D19/08	主分类号	F24D19/08
代理机构		代理人
主权项
地址

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