Wave signal frequency-changing system with constant current biased frequency changing device,申请号US19500200457-传众专利搜索

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发明名称	Wave signal frequency-changing system with constant current biased frequency changing device
摘要
申请公布号	US2640919(A)	申请公布日期	1953.06.02
申请号	US19500200457	申请日期	1950.12.12
申请人	ZENITH RADIO CORPORATION	发明人	BELL JOHN F.;NORDBY ROGER M.
分类号	H03D7/02	主分类号	H03D7/02
代理机构		代理人
主权项
地址

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