Harmonic analyzer,申请号US19380236821-传众专利搜索

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发明名称	Harmonic analyzer
摘要
申请公布号	US2212799(A)	申请公布日期	1940.08.27
申请号	US19380236821	申请日期	1938.10.24
申请人	SPERRY ARTHUR B	发明人	SPERRY ARTHUR B.
分类号	G06G7/19	主分类号	G06G7/19
代理机构		代理人
主权项
地址

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