Signal device,申请号US19390270590-传众专利搜索

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发明名称	Signal device
摘要
申请公布号	US2194507(A)	申请公布日期	1940.03.26
申请号	US19390270590	申请日期	1939.04.28
申请人	THE A. E. RITTENHOUSE CO., INC.	发明人	LORD KENNETH M.;WARREN GLENN E.
分类号	G10K1/066	主分类号	G10K1/066
代理机构		代理人
主权项
地址

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