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经营范围
发明名称
Loose-leaf binder
摘要
申请公布号
US1872248(A)
申请公布日期
1932.08.16
申请号
US19310511070
申请日期
1931.01.24
申请人
THE MCBEE BINDER COMPANY
发明人
CONNOR ROGER;WELK NELSON S.;ZENNER DAVID R.
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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