Improvements in or relating to modulating devices for changing the frequencies of electric currents,申请号GB19290034198-传众专利搜索

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发明名称	Improvements in or relating to modulating devices for changing the frequencies of electric currents
摘要
申请公布号	GB334445(A)	申请公布日期	1930.09.04
申请号	GB19290034198	申请日期	1929.11.08
申请人	SOCIETE FRANCAISE RADIO ELECTRIQUE	发明人
分类号	H03C1/52	主分类号	H03C1/52
代理机构		代理人
主权项
地址

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