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发明名称
Improvements in books
摘要
申请公布号
GB2327203(B)
申请公布日期
2001.01.31
申请号
GB19970014518
申请日期
1997.07.11
申请人
TRACY ELIZABETH * FRANCIS
发明人
TRACY ELIZABETH * FRANCIS
分类号
A63H33/38;(IPC1-7):A63H33/38
主分类号
A63H33/38
代理机构
代理人
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