Electronic braille instructor,申请号US19610122382-传众专利搜索

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发明名称	Electronic braille instructor
摘要
申请公布号	US3230644(A)	申请公布日期	1966.01.25
申请号	US19610122382	申请日期	1961.06.29
申请人	ELECTRO-MECHANICAL CONSULTANTS, INC.	发明人	IRAZOQUI CARLOS A.
分类号	G09B21/00	主分类号	G09B21/00
代理机构		代理人
主权项
地址

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