Telephone line circuit,申请号US19400359827-传众专利搜索

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发明名称	Telephone line circuit
摘要
申请公布号	US2314933(A)	申请公布日期	1943.03.30
申请号	US19400359827	申请日期	1940.10.05
申请人	ASSOCIATED ELECTRIC LABORATORIES, INC.	发明人	GRIFFINS MORRIS E.
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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