Private automatic branch exchange detector,申请号US19590857309-传众专利搜索

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发明名称	Private automatic branch exchange detector
摘要
申请公布号	US3140350(A)	申请公布日期	1964.07.07
申请号	US19590857309	申请日期	1959.12.04
申请人	AUTOMATIC ELECTRIC LABORATORIES, INC.	发明人	OSTLINE MATTIE A.
分类号	H04M15/34	主分类号	H04M15/34
代理机构		代理人
主权项
地址

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