DTMF SIGNAL TRANSMISSION CIRCUIT OF ELECTRONIC LOCAL AREA EXCHANGE,申请号KR1019960007910-传众专利搜索

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发明名称	DTMF SIGNAL TRANSMISSION CIRCUIT OF ELECTRONIC LOCAL AREA EXCHANGE
摘要
申请公布号	KR100194416(B1)	申请公布日期	1999.02.09
申请号	KR1019960007910	申请日期	1996.03.22
申请人		发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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