Directory sign for elevator cars,申请号US19480036586-传众专利搜索

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发明名称	Directory sign for elevator cars
摘要
申请公布号	US2518920(A)	申请公布日期	1950.08.15
申请号	US19480036586	申请日期	1948.07.02
申请人	OTIS ELEVATOR COMPANY	发明人	MERKER DAVID;BROUNN MORRISON JOHN
分类号	B66B3/02;G09F7/00	主分类号	B66B3/02
代理机构		代理人
主权项
地址

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