Telephone answering and recording devices,申请号US19530392828-传众专利搜索

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发明名称	Telephone answering and recording devices
摘要
申请公布号	US2799726(A)	申请公布日期	1957.07.16
申请号	US19530392828	申请日期	1953.11.18
申请人	TELEPHONE ANSWERING AND RECORDING CORPORATION	发明人	DEVENTER HARRY R. VAN;SHIVELY JOHN J.;BAILEY PAUL C.
分类号	H04M1/65	主分类号	H04M1/65
代理机构		代理人
主权项
地址

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