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发明名称
Automatic twist drill milling machine
摘要
申请公布号
US1933362(A)
申请公布日期
1933.10.31
申请号
US19300473658
申请日期
1930.08.07
申请人
JOHN BERGSTROM
发明人
BERGSTROM JOHN
分类号
B23C3/32
主分类号
B23C3/32
代理机构
代理人
主权项
地址
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