Improvements in or relating to circuit-arrangements for indicating the frequency of electrical oscillations,申请号GB19470008097-传众专利搜索

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发明名称	Improvements in or relating to circuit-arrangements for indicating the frequency of electrical oscillations
摘要
申请公布号	GB629322(A)	申请公布日期	1949.09.16
申请号	GB19470008097	申请日期	1947.03.25
申请人	PHILIPS LAMPS LIMITED	发明人
分类号	H03J3/12;H03J3/14	主分类号	H03J3/12
代理机构		代理人
主权项
地址

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