Telephone system detection circuit,申请号US19600034179-传众专利搜索

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发明名称	Telephone system detection circuit
摘要
申请公布号	US3192323(A)	申请公布日期	1965.06.29
申请号	US19600034179	申请日期	1960.06.06
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	HERSEY RALPH E.
分类号	H04M19/02	主分类号	H04M19/02
代理机构		代理人
主权项
地址

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