Teaching apparatus and method using sound recording,申请号US19640417528-传众专利搜索

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发明名称	Teaching apparatus and method using sound recording
摘要
申请公布号	US3280271(A)	申请公布日期	1966.10.18
申请号	US19640417528	申请日期	1964.11.02
申请人	GENERAL ELECTRONIC LABORATORIES, INC.	发明人	MEYER EDWARD M.
分类号	G09B5/04	主分类号	G09B5/04
代理机构		代理人
主权项
地址

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