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经营范围
发明名称
Apparatus for lapping or grinding
摘要
申请公布号
US1957569(A)
申请公布日期
1934.05.08
申请号
US19310583313
申请日期
1931.12.26
申请人
THE CARBORUNDUM COMPANY
发明人
WILLS HERBERT J.
分类号
B24B11/06;B24B37/02
主分类号
B24B11/06
代理机构
代理人
主权项
地址
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