Elevator signal machine and system,申请号US19390286526-传众专利搜索

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发明名称	Elevator signal machine and system
摘要
申请公布号	US2304160(A)	申请公布日期	1942.12.08
申请号	US19390286526	申请日期	1939.07.26
申请人	FOSTER SAMPSON D	发明人	FOSTER SAMPSON D.
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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