Safety device for door operating mechanism,申请号US19470730496-传众专利搜索

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发明名称	Safety device for door operating mechanism
摘要
申请公布号	US2602664(A)	申请公布日期	1952.07.08
申请号	US19470730496	申请日期	1947.02.24
申请人	MCKEE DOOR COMPANY	发明人	MATCHETT MAHLON M.
分类号	E05F15/16	主分类号	E05F15/16
代理机构		代理人
主权项
地址

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