Combined telephone and telegraph system,申请号US19480058501-传众专利搜索

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发明名称	Combined telephone and telegraph system
摘要
申请公布号	US2589131(A)	申请公布日期	1952.03.11
申请号	US19480058501	申请日期	1948.11.05
申请人	MARTHA W. C. POTTS;TELETYPE CORPORATION	发明人
分类号	H04M11/06	主分类号	H04M11/06
代理机构		代理人
主权项
地址

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