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发明名称
Locking assembly for treating and testing tools
摘要
申请公布号
US2831542(A)
申请公布日期
1958.04.22
申请号
US19530332128
申请日期
1953.01.19
申请人
LYNES, INC.
发明人
LYNES JOHN;ALLEN GEORGE H.;GARDNER JIMMY D.
分类号
E21B33/124;E21B33/128
主分类号
E21B33/124
代理机构
代理人
主权项
地址
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