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经营范围
发明名称
Process of making an abrasive disk
摘要
申请公布号
US1832535(A)
申请公布日期
1931.11.17
申请号
US19300500626
申请日期
1930.12.06
申请人
TITAN ABRASIVES CO., INC.
发明人
DOERMANN ALBERT J.
分类号
B24D18/00
主分类号
B24D18/00
代理机构
代理人
主权项
地址
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