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发明名称
Keyboard training device
摘要
申请公布号
USD476367(S1)
申请公布日期
2003.06.24
申请号
US20010151177F
申请日期
2001.10.19
申请人
HECKMANN, JR. BERNARD E.
发明人
HECKMANN, JR. BERNARD E.
分类号
主分类号
代理机构
代理人
主权项
地址
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