Improvements in or relating to parametric amplifiers,申请号GB19580019390-传众专利搜索

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发明名称	Improvements in or relating to parametric amplifiers
摘要
申请公布号	GB857652(A)	申请公布日期	1961.01.04
申请号	GB19580019390	申请日期	1958.06.17
申请人	WESTERN ELECTRIC COMPANY	发明人
分类号	H01J25/49	主分类号	H01J25/49
代理机构		代理人
主权项
地址

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