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发明名称
Loose-leaf binder and paper-punch combination
摘要
申请公布号
US3349774(A)
申请公布日期
1967.10.31
申请号
US19660578274
申请日期
1966.09.09
申请人
MATTEL, INC.
发明人
RYAN JOHN W.
分类号
B42F13/40
主分类号
B42F13/40
代理机构
代理人
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地址
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