Air valve for radiators,申请号US19300418521-传众专利搜索

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发明名称	Air valve for radiators
摘要
申请公布号	US1907844(A)	申请公布日期	1933.05.09
申请号	US19300418521	申请日期	1930.01.04
申请人	BRIDGEPORT BRASS COMPANY	发明人	MACDONALD WILLIAM F.
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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