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发明名称
Normalschriftlesegeraet fuer Blinde
摘要
申请公布号
DE819926(C)
申请公布日期
1951.11.05
申请号
DE1949P055634
申请日期
1949.09.22
申请人
HIPPE HERBERT
发明人
HIPPE HERBERT
分类号
G09B21/00
主分类号
G09B21/00
代理机构
代理人
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