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经营范围
发明名称
Loose leaf binder
摘要
申请公布号
US1978352(A)
申请公布日期
1934.10.23
申请号
US19320599176
申请日期
1932.03.16
申请人
NATIONAL PUBLISHING COMPANY
发明人
MOREHOUSE CYRUS E.
分类号
B42F13/00
主分类号
B42F13/00
代理机构
代理人
主权项
地址
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