Door control device,申请号US19560586780-传众专利搜索

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发明名称	Door control device
摘要
申请公布号	US2933755(A)	申请公布日期	1960.04.26
申请号	US19560586780	申请日期	1956.05.23
申请人	GEORGE W. HOULSBY, JR.	发明人	CARLSON MARTIN
分类号	E05F3/10	主分类号	E05F3/10
代理机构		代理人
主权项
地址

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