Electrosignal warning device,申请号US19430474350-传众专利搜索

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发明名称	Electrosignal warning device
摘要
申请公布号	US2391974(A)	申请公布日期	1946.01.01
申请号	US19430474350	申请日期	1943.02.01
申请人	SAM HURWITZ	发明人	HURWITZ SAM
分类号	H01H43/30;H01H61/06	主分类号	H01H43/30
代理机构		代理人
主权项
地址

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