An audible time-alarm system,申请号GB19450019835-传众专利搜索

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发明名称	An audible time-alarm system
摘要
申请公布号	GB609312(A)	申请公布日期	1948.09.29
申请号	GB19450019835	申请日期	1945.08.01
申请人	BERNARD LOUIS JOSEPH FERNAND LE ROUX	发明人
分类号	G04B23/00;G04F3/02	主分类号	G04B23/00
代理机构		代理人
主权项
地址

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