Truck concentrator for telephone answering service,申请号US19580764148-传众专利搜索

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发明名称	Truck concentrator for telephone answering service
摘要
申请公布号	US3002054(A)	申请公布日期	1961.09.26
申请号	US19580764148	申请日期	1958.09.29
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	KROM MYRON E.
分类号	H04M3/54	主分类号	H04M3/54
代理机构		代理人
主权项
地址

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