ELECTRIC IMPULSE TRANSMITTERS FOR TELEPHONE INSTRUMENTS,申请号GB19740001800-传众专利搜索

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发明名称	ELECTRIC IMPULSE TRANSMITTERS FOR TELEPHONE INSTRUMENTS
摘要
申请公布号	GB1515503(A)	申请公布日期	1978.06.28
申请号	GB19740001800	申请日期	1974.01.15
申请人	GENERAL ELECTRIC CO LTD	发明人
分类号	H04M1/31;(IPC1-7):H04M1/27	主分类号	H04M1/31
代理机构		代理人
主权项
地址

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