Signal device for elevators,申请号US19400313250-传众专利搜索

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发明名称	Signal device for elevators
摘要
申请公布号	US2303423(A)	申请公布日期	1942.12.01
申请号	US19400313250	申请日期	1940.01.10
申请人	WESTINGHOUSE ELECTRIC ELEVATOR COMPANY	发明人	BAUM DONALD H.
分类号	B66B3/02	主分类号	B66B3/02
代理机构		代理人
主权项
地址

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