INSTANT RESPONSE SYSTEM FOR LANGUAGE LABORATORY AND METHOD,申请号USD3538625-传众专利搜索

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发明名称	INSTANT RESPONSE SYSTEM FOR LANGUAGE LABORATORY AND METHOD
摘要
申请公布号	US3538625(A)	申请公布日期	1970.11.10
申请号	USD3538625	申请日期	1968.09.17
申请人	INSTRUCTOMATIC INC.	发明人	SIDNEY C. KNIGHT
分类号	G09B5/04;(IPC1-7):G09B5/04	主分类号	G09B5/04
代理机构		代理人
主权项
地址

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