Improvements in or relating to calibration arrangements suitable for use in carrier telecommunication systems,申请号GB19440017645-传众专利搜索

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发明名称	Improvements in or relating to calibration arrangements suitable for use in carrier telecommunication systems
摘要
申请公布号	GB582307(A)	申请公布日期	1946.11.12
申请号	GB19440017645	申请日期	1944.09.15
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED;CHARLES FRANCIS CAMPBELL	发明人
分类号	H04J1/16	主分类号	H04J1/16
代理机构		代理人
主权项
地址

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