SYSTEM FOR DETECTION OF MICROTELEPHONE LIFTING SIGNAL OF A TELEPHONE,申请号PL19870269245-传众专利搜索

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发明名称	SYSTEM FOR DETECTION OF MICROTELEPHONE LIFTING SIGNAL OF A TELEPHONE
摘要
申请公布号	PL153506(B2)	申请公布日期	1991.04.30
申请号	PL19870269245	申请日期	1987.12.03
申请人		发明人
分类号	H04M;H04M1/00;H04Q;H04Q3/52;(IPC1-7):H04M1/00	主分类号	H04M
代理机构		代理人
主权项
地址

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