Improvements in or relating to signalling systems wherein the signals are formed by electrical impulses,申请号GB19370010807-传众专利搜索

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发明名称	Improvements in or relating to signalling systems wherein the signals are formed by electrical impulses
摘要
申请公布号	GB485703(A)	申请公布日期	1938.05.24
申请号	GB19370010807	申请日期	1937.04.15
申请人	COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ;RENE BARTHELEMY;THEODORE VOGEL	发明人
分类号	H04M19/02	主分类号	H04M19/02
代理机构		代理人
主权项
地址

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