Telephone call intercepting system,申请号US19450597778-传众专利搜索

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发明名称	Telephone call intercepting system
摘要
申请公布号	US2508644(A)	申请公布日期	1950.05.23
申请号	US19450597778	申请日期	1945.06.06
申请人	AUTOMATIC ELECTRIC LABORATORIES, INC.	发明人	JONES ROY W.
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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