Tariff determining equipment for telephone systems,申请号US19390258394-传众专利搜索

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发明名称	Tariff determining equipment for telephone systems
摘要
申请公布号	US2273165(A)	申请公布日期	1942.02.17
申请号	US19390258394	申请日期	1939.02.25
申请人	WESTERN ELECTRIC COMPANY, INCORPORATED	发明人	WRIGHT ESMOND P. G.
分类号	H04M15/04	主分类号	H04M15/04
代理机构		代理人
主权项
地址

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