Sound signal device,申请号US19590825766-传众专利搜索

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发明名称	Sound signal device
摘要
申请公布号	US2946995(A)	申请公布日期	1960.07.26
申请号	US19590825766	申请日期	1959.07.08
申请人	FEDERAL SIGN AND SIGNAL CORPORATION	发明人	GOSSWILLER EARL W.
分类号	G10K9/13	主分类号	G10K9/13
代理机构		代理人
主权项
地址

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