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发明名称
Machine for flexing sheet abrasives
摘要
申请公布号
US1854021(A)
申请公布日期
1932.04.12
申请号
US19300467351
申请日期
1930.07.11
申请人
UNION SANDPAPER COMPANY
发明人
DERBY CHARLES H.
分类号
B24D11/00
主分类号
B24D11/00
代理机构
代理人
主权项
地址
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