A CIRCUIT ARRANGEMENT FOR PREVENTING ACOUSTIC FEEDBACK IN NETWORK COMMUNICATION SYSTEM,申请号IE19770002595-传众专利搜索

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发明名称	A CIRCUIT ARRANGEMENT FOR PREVENTING ACOUSTIC FEEDBACK IN NETWORK COMMUNICATION SYSTEM
摘要
申请公布号	IE45954(B1)	申请公布日期	1983.01.12
申请号	IE19770002595	申请日期	1977.12.21
申请人	DASY INTER SA	发明人
分类号	H04M9/10;H04M1/60;H04R3/02;(IPC1-7):H04R3/02;H04B3/20;H04M9/08	主分类号	H04M9/10
代理机构		代理人
主权项
地址

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