Automatic self-closing window ventilator,申请号US19380200352-传众专利搜索

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发明名称	Automatic self-closing window ventilator
摘要
申请公布号	US2182558(A)	申请公布日期	1939.12.05
申请号	US19380200352	申请日期	1938.04.06
申请人	HASSILDINE EDWARD C	发明人	HASSILDINE EDWARD C.
分类号	E06B7/06	主分类号	E06B7/06
代理机构		代理人
主权项
地址

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