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发明名称
Improvements in abrasive coated materials
摘要
申请公布号
GB379379(A)
申请公布日期
1932.08.29
申请号
GB19320019254
申请日期
1931.03.28
申请人
WILLIAM JOHN TENNANT
发明人
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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