Self-closing door mechanism or hinge,申请号US19650449823-传众专利搜索

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发明名称	Self-closing door mechanism or hinge
摘要
申请公布号	US3344462(A)	申请公布日期	1967.10.03
申请号	US19650449823	申请日期	1965.04.21
申请人	NATIONAL LOCK CO.	发明人	WEBSTER EDWARD M.
分类号	E05F1/12	主分类号	E05F1/12
代理机构		代理人
主权项
地址

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