CONTROLLABLE ELECTRONIC ATTENUATOR HAVING ZERO DIFFERENTIAL PHASE SHIFT,申请号USD3539909-传众专利搜索

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发明名称	CONTROLLABLE ELECTRONIC ATTENUATOR HAVING ZERO DIFFERENTIAL PHASE SHIFT
摘要
申请公布号	US3539909(A)	申请公布日期	1970.11.10
申请号	USD3539909	申请日期	1969.01.28
申请人	SPERRY RAND CORP.	发明人	JOHN G. MORRISON
分类号	G05F1/44;H03G1/00;H03H7/25;(IPC1-7):H02J3/18	主分类号	G05F1/44
代理机构		代理人
主权项
地址

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