Audiometer threshold signal adjusting network,申请号US19500150187-传众专利搜索

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发明名称	Audiometer threshold signal adjusting network
摘要
申请公布号	US2605355(A)	申请公布日期	1952.07.29
申请号	US19500150187	申请日期	1950.03.17
申请人	FOSTER GEORGE E	发明人	FOSTER GEORGE E.
分类号	A61B5/12	主分类号	A61B5/12
代理机构		代理人
主权项
地址

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