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发明名称
Deflecting tool
摘要
申请公布号
US2797894(A)
申请公布日期
1957.07.02
申请号
US19540478591
申请日期
1954.12.30
申请人
MEYER PAUL H
发明人
MEYER PAUL H.
分类号
E21B7/06;E21B7/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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