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发明名称
Improvements in and relating to twist drill grinding attachments
摘要
申请公布号
GB509214(A)
申请公布日期
1939.07.12
申请号
GB19380030176
申请日期
1938.10.18
申请人
JESSE ALVIN YANTISS
发明人
分类号
B24B3/26
主分类号
B24B3/26
代理机构
代理人
主权项
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