TELEPHONE APPARATUS PROVIDED WITH A PREAMPLIFIER WITH CARRIER CURRENT, AN INTERRUPTER FOR DISCONNECTION OF THE MICROPHONE AND A DEVICE FOR SIGNALLING THIS DISCONNECTION,申请号EP19810109647-传众专利搜索

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发明名称	TELEPHONE APPARATUS PROVIDED WITH A PREAMPLIFIER WITH CARRIER CURRENT, AN INTERRUPTER FOR DISCONNECTION OF THE MICROPHONE AND A DEVICE FOR SIGNALLING THIS DISCONNECTION
摘要
申请公布号	EP0052347(B1)	申请公布日期	1984.09.05
申请号	EP19810109647	申请日期	1981.11.12
申请人	HORLOGERIE PHOTOGRAPHIQUE FRANCAISE	发明人	MONTENONT, JEAN
分类号	H04M1/60;(IPC1-7):04M1/10	主分类号	H04M1/60
代理机构		代理人
主权项
地址

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