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发明名称
摘要
申请公布号
DE9304962(U1)
申请公布日期
1993.05.27
申请号
DE19930004962U
申请日期
1993.04.01
申请人
NIESEL, GEORG, DIPL.-PHYS., 4793 BUEREN, DE
发明人
分类号
G09B23/06;G09B23/14
主分类号
G09B23/06
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代理人
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