Service signal for use in dining rooms, hotels, cafes, shops and the like,申请号GB19300008223-传众专利搜索

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发明名称	Service signal for use in dining rooms, hotels, cafes, shops and the like
摘要
申请公布号	GB351477(A)	申请公布日期	1931.06.15
申请号	GB19300008223	申请日期	1930.03.14
申请人	ARTHUR PHILLIPS HEMSLEY	发明人
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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