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发明名称
Improvements in paper files or clips
摘要
申请公布号
GB326244(A)
申请公布日期
1930.03.10
申请号
GB19280036392
申请日期
1928.12.10
申请人
A.E. WALKER, LIMITED;HENRY HYDER
发明人
分类号
B42F9/00
主分类号
B42F9/00
代理机构
代理人
主权项
地址
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