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发明名称
Loose-leaf binder
摘要
申请公布号
US1867456(A)
申请公布日期
1932.07.12
申请号
US19300494939
申请日期
1930.11.11
申请人
MORIAND & IMPEY LIMITED
发明人
IMPEY FRANCIS LEVITT
分类号
B42F17/00
主分类号
B42F17/00
代理机构
代理人
主权项
地址
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