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经营范围
发明名称
Loose leaf binder
摘要
申请公布号
US1841894(A)
申请公布日期
1932.01.19
申请号
US19300494938
申请日期
1930.11.11
申请人
MORLAND & IMPEY, LIMITED
发明人
IMPEY FRANCIS LEVITT
分类号
B42F13/12
主分类号
B42F13/12
代理机构
代理人
主权项
地址
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