发明名称 Cards for learning pronunciations
摘要 The standard pronunciation of a word in any language is recorded on a segment of wide magnetic tape which is mounted on a flexible card or sheet. For visual reading of the same word, spelling or character is printed on the same card. A device is provided to transport and guide each card so as to have sound recording portions of the card make a sliding contact with the electromagnetic transducer head.
申请公布号 US4237624(A) 申请公布日期 1980.12.09
申请号 US19780944378 申请日期 1978.09.21
申请人 YEH, RICHARD S 发明人 YEH, RICHARD S
分类号 G09B5/06;G09B19/04;(IPC1-7):G09B19/04;G11B25/04 主分类号 G09B5/06
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