Automatic telephone system,申请号US19410377835-传众专利搜索

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发明名称	Automatic telephone system
摘要
申请公布号	US2298909(A)	申请公布日期	1942.10.13
申请号	US19410377835	申请日期	1941.02.07
申请人	ASSOCIATED ELECTRIC LABORATORIES, INC.	发明人	WILLIS BERNARD D.
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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