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发明名称
Clip board
摘要
申请公布号
US2548389(A)
申请公布日期
1951.04.10
申请号
US19470758273
申请日期
1947.07.01
申请人
NEIKIRK FLOYD E
发明人
NEIKIRK FLOYD E.
分类号
B42F1/00
主分类号
B42F1/00
代理机构
代理人
主权项
地址
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