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发明名称
Tonbandgerät für Lehr-, insbesondere Sprachlehrzwecke
摘要
申请公布号
CH532302(A)
申请公布日期
1972.12.31
申请号
CH19710004487
申请日期
1971.03.26
申请人
LEY,ERICH JOSEF
发明人
JOSEF LEY,ERICH
分类号
G09B5/04;G11B15/18;G11B27/36;(IPC1-7):G09B5/04;G11B21/02
主分类号
G09B5/04
代理机构
代理人
主权项
地址
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