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发明名称
Boring tool
摘要
申请公布号
US2633334(A)
申请公布日期
1953.03.31
申请号
US19490126990
申请日期
1949.11.14
申请人
LAVENDER WILLIAM H
发明人
LAVENDER WILLIAM H.
分类号
E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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