Variable bandwidth band-pass filter,申请号US19500161177-传众专利搜索

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发明名称	Variable bandwidth band-pass filter
摘要
申请公布号	US2716733(A)	申请公布日期	1955.08.30
申请号	US19500161177	申请日期	1950.05.10
申请人	ESSO RESEARCH AND ENGINEERING COMPANY	发明人	ROARK JAMES J.
分类号	G01V1/24;H03H7/01	主分类号	G01V1/24
代理机构		代理人
主权项
地址

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