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发明名称
Abrasive wheel
摘要
申请公布号
US2181547(A)
申请公布日期
1939.11.28
申请号
US19380226567
申请日期
1938.08.24
申请人
JOSEPH BURNS
发明人
BURNS JOSEPH
分类号
B24B31/104
主分类号
B24B31/104
代理机构
代理人
主权项
地址
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