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发明名称
Breakout table
摘要
申请公布号
US2657908(A)
申请公布日期
1953.11.03
申请号
US19490113973
申请日期
1949.09.03
申请人
THE GEORGE E. FAILING SUPPLY COMPANY
发明人
FAILING GEORGE E.
分类号
E21B19/00
主分类号
E21B19/00
代理机构
代理人
主权项
地址
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