Door locking and opening and closing device,申请号US19440538736-传众专利搜索

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发明名称	Door locking and opening and closing device
摘要
申请公布号	US2477112(A)	申请公布日期	1949.07.26
申请号	US19440538736	申请日期	1944.06.05
申请人	THE YOUNGSTOWN STEEL DOOR COMPANY	发明人	BEAUCHAMP WILFRED A.;LUTE CARL
分类号	B62D33/037;E05B65/14	主分类号	B62D33/037
代理机构		代理人
主权项
地址

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