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发明名称
Paper file
摘要
申请公布号
US1862450(A)
申请公布日期
1932.06.07
申请号
US19300499087
申请日期
1930.11.29
申请人
AINSWORTH ALBERT A
发明人
AINSWORTH ALBERT A.
分类号
B42F5/06;B42F17/18
主分类号
B42F5/06
代理机构
代理人
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