Improvements in frequency transforming arrangements,申请号GB19330017022-传众专利搜索

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发明名称	Improvements in frequency transforming arrangements
摘要
申请公布号	GB421129(A)	申请公布日期	1934.12.14
申请号	GB19330017022	申请日期	1933.06.14
申请人	TELEFONAKTIEBOLAGET L. M. ERICSSON	发明人
分类号	H03B19/12	主分类号	H03B19/12
代理机构		代理人
主权项
地址

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