Table service signal device for restaurants,申请号US19490109092-传众专利搜索

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发明名称	Table service signal device for restaurants
摘要
申请公布号	US2563693(A)	申请公布日期	1951.08.07
申请号	US19490109092	申请日期	1949.08.08
申请人	WILLIAM A. HAWKINS	发明人	RUSSELL CHARLES G.
分类号	G08B5/02	主分类号	G08B5/02
代理机构		代理人
主权项
地址

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