TELEPHONE TONE DETECTOR,申请号GB19880016797-传众专利搜索

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发明名称	TELEPHONE TONE DETECTOR
摘要
申请公布号	GB2208775(B)	申请公布日期	1991.05.01
申请号	GB19880016797	申请日期	1988.07.14
申请人	* MITEL CORPORATION	发明人	MELVIN J * ROBERTS;FRANK * DEA
分类号	H04Q1/446;H04Q1/444;H04Q1/45;H04Q1/453	主分类号	H04Q1/446
代理机构		代理人
主权项
地址

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