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发明名称
VORRICHTUNG FUER DIE DRAHTLOSE UEBERTRAGUNG EINES LEHRPROGRAMMES IN UNTERRICHTSRAEUMEN
摘要
申请公布号
DE2656431(A1)
申请公布日期
1978.06.22
申请号
DE19762656431
申请日期
1976.12.14
申请人
DEMOLUX GMBH & CO KG
发明人
HEIN GRUNWALD,PETER
分类号
G09B5/08;G09B5/14;H04B10/114;H04R1/10;(IPC1-7):09B5/04;02J7/02;04B9/00
主分类号
G09B5/08
代理机构
代理人
主权项
地址
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