Telephone system,申请号US19350030378-传众专利搜索

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发明名称	Telephone system
摘要
申请公布号	US2094140(A)	申请公布日期	1937.09.28
申请号	US19350030378	申请日期	1935.07.08
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人	WOCHINGER EDUARD
分类号	H04Q3/58	主分类号	H04Q3/58
代理机构		代理人
主权项
地址

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