Automatic device for effecting telephone calls and transmitting signals,申请号US19370138400-传众专利搜索

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发明名称	Automatic device for effecting telephone calls and transmitting signals
摘要
申请公布号	US2131565(A)	申请公布日期	1938.09.27
申请号	US19370138400	申请日期	1937.04.22
申请人	OSCAR LAUERSDORF ALBINO	发明人	LAUERSDORF ALBINO OSCAR
分类号	H04M11/04	主分类号	H04M11/04
代理机构		代理人
主权项
地址

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