Electronic tone generator,申请号US19490074388-传众专利搜索

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发明名称	Electronic tone generator
摘要
申请公布号	US2588680(A)	申请公布日期	1952.03.11
申请号	US19490074388	申请日期	1949.02.03
申请人	WILBESPAN RESEARCH LABS, INC.	发明人	WILLIAMS RICHARD E.
分类号	G10H3/06	主分类号	G10H3/06
代理机构		代理人
主权项
地址

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