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发明名称
SIGN HOLDER
摘要
申请公布号
GB8305246(D0)
申请公布日期
1983.03.30
申请号
GB19830005246
申请日期
1983.02.25
申请人
BAERMANN, M
发明人
分类号
G09B29/00;G09F7/04;(IPC1-7):G09F/
主分类号
G09B29/00
代理机构
代理人
主权项
地址
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