Telephone system,申请号US19300455541-传众专利搜索

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法人/股东/高管

发明名称	Telephone system
摘要
申请公布号	US1871300(A)	申请公布日期	1932.08.09
申请号	US19300455541	申请日期	1930.05.26
申请人	ASSOCIATED ELECTRIC LABORATORIES, INC.	发明人	BURGENER JOHN A.
分类号	H04M3/12	主分类号	H04M3/12
代理机构		代理人
主权项
地址

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