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经营范围
发明名称
File cleaner
摘要
申请公布号
US2544310(A)
申请公布日期
1951.03.06
申请号
US19440534779
申请日期
1944.05.09
申请人
GERHAN ARNOLD B
发明人
GERHAN ARNOLD B.
分类号
B23D79/06
主分类号
B23D79/06
代理机构
代理人
主权项
地址
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