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发明名称
Ring binder
摘要
申请公布号
HK22196(A)
申请公布日期
1996.02.16
申请号
HK19960000221
申请日期
1996.02.08
申请人
WORLD-WIDE CHENG
发明人
HUNG YU CHENG
分类号
B42F13/22;B42F13/26;(IPC1-7):B42F13/20
主分类号
B42F13/22
代理机构
代理人
主权项
地址
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