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发明名称
Reproducing punch
摘要
申请公布号
US2768691(A)
申请公布日期
1956.10.30
申请号
US19520289642
申请日期
1952.05.23
申请人
COOPER
发明人
COOPER BENJAMIN;KEEFE LINCOLN M.
分类号
主分类号
代理机构
代理人
主权项
地址
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