ELECTRONIC TELEPHONE SYSTEMS AND RINGING ARRANGEMENTS THEREFOR,申请号CAD679804-传众专利搜索

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发明名称	ELECTRONIC TELEPHONE SYSTEMS AND RINGING ARRANGEMENTS THEREFOR
摘要
申请公布号	CA679804(A)	申请公布日期	1964.02.11
申请号	CAD679804	申请日期
申请人	AUTOMATIC ELECTRIC LABORATORIES	发明人	HORACE C. TALCOTT
分类号		主分类号
代理机构		代理人
主权项
地址

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