Air check door closer,申请号US19470759061-传众专利搜索

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发明名称	Air check door closer
摘要
申请公布号	US2478717(A)	申请公布日期	1949.08.09
申请号	US19470759061	申请日期	1947.07.05
申请人		发明人	SIMPSON HERBERT A.
分类号	E05F3/02	主分类号	E05F3/02
代理机构		代理人
主权项
地址

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