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发明名称
Loose leaf binders
摘要
申请公布号
US2924221(A)
申请公布日期
1960.02.09
申请号
US19580710229
申请日期
1958.01.21
申请人
DUDLEY DUDLEY-SMITH EDWARD
发明人
DUDLEY-SMITH EDWARD DUDLEY
分类号
B42F13/16;B42F13/22
主分类号
B42F13/16
代理机构
代理人
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地址
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