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发明名称
A LOCKABLE RING BINDER MECHANISM
摘要
申请公布号
GB9107961(D0)
申请公布日期
1991.05.29
申请号
GB19910007961
申请日期
1991.04.15
申请人
BENSONS INTERNATIONAL SYSTEMS LIMITED
发明人
分类号
B42F13/26
主分类号
B42F13/26
代理机构
代理人
主权项
地址
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