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发明名称
Means for holding and adjusting alpha drill bit while the same is being sharpened
摘要
申请公布号
US1856829(A)
申请公布日期
1932.05.03
申请号
US19310521537
申请日期
1931.03.10
申请人
AUGUST GASSMANN
发明人
GASSMANN AUGUST
分类号
B24B3/28
主分类号
B24B3/28
代理机构
代理人
主权项
地址
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