Improved apparatus for investigating and recording amplitudes of multiple frequencies,申请号GB19450002928-传众专利搜索

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发明名称	Improved apparatus for investigating and recording amplitudes of multiple frequencies
摘要
申请公布号	GB594674(A)	申请公布日期	1947.11.17
申请号	GB19450002928	申请日期	1945.02.05
申请人	JOHN HENRY MITCHELL	发明人
分类号	G01P3/48	主分类号	G01P3/48
代理机构		代理人
主权项
地址

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