Common medium multichannel exchange system,申请号US19340727806-传众专利搜索

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发明名称	Common medium multichannel exchange system
摘要
申请公布号	US2064907(A)	申请公布日期	1936.12.22
申请号	US19340727806	申请日期	1934.05.26
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	GREEN ESTILL I.
分类号	H04W99/00	主分类号	H04W99/00
代理机构		代理人
主权项
地址

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