Unattended repeater system,申请号US19340729922-传众专利搜索

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发明名称	Unattended repeater system
摘要
申请公布号	US2018850(A)	申请公布日期	1935.10.29
申请号	US19340729922	申请日期	1934.06.09
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	GREEN ESTILL IBBOTSON;LEIBE FRANK AUGUSTUS
分类号	H04J1/16	主分类号	H04J1/16
代理机构		代理人
主权项
地址

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