Automatic transmission measuring circuit for successively testing the idle trunks in a group of trunks,申请号US19550516362-传众专利搜索

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发明名称	Automatic transmission measuring circuit for successively testing the idle trunks in a group of trunks
摘要
申请公布号	US2761922(A)	申请公布日期	1956.09.04
申请号	US19550516362	申请日期	1955.06.20
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	CARROLL WILLIAM R.
分类号	H04M3/32	主分类号	H04M3/32
代理机构		代理人
主权项
地址

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