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发明名称
Power drilling device
摘要
申请公布号
US3234977(A)
申请公布日期
1966.02.15
申请号
US19620233815
申请日期
1962.10.29
申请人
EDWIN BYERS JOHN
发明人
BYERS JOHN EDWIN
分类号
B23B45/14;B27C3/08
主分类号
B23B45/14
代理机构
代理人
主权项
地址
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