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发明名称
Improvements relating to loose leaf ledgers and the like
摘要
申请公布号
GB388233(A)
申请公布日期
1933.02.23
申请号
GB19320009278
申请日期
1932.03.31
申请人
JOHN MEYER HUTTON;PERCY JONES (TWINLOCK) LIMITED
发明人
分类号
B42F13/04
主分类号
B42F13/04
代理机构
代理人
主权项
地址
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