Automatic telephone system having rating independent of routing,申请号US19420451622-传众专利搜索

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发明名称	Automatic telephone system having rating independent of routing
摘要
申请公布号	US2437118(A)	申请公布日期	1948.03.02
申请号	US19420451622	申请日期	1942.07.20
申请人	AUTOMATIC ELECTRIC LABORATORIES, INC.	发明人	OSTLINE JOHN E.
分类号	H04M15/04;H04Q3/00	主分类号	H04M15/04
代理机构		代理人
主权项
地址

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