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发明名称
SELO DE METAL A METAL
摘要
申请公布号
BR8300465(A)
申请公布日期
1983.11.01
申请号
BR19830000465
申请日期
1983.01.31
申请人
GRAY TOOL COMPANY
发明人
JOHN KENT MCGEE;HAROLD LEWIS LAFFERTY;CHARLES DANIEL BRIDGES;ARCHIE L. SMITH
分类号
E21B33/00;E21B33/03;E21B33/04;F16J15/08;(IPC1-7):E21B33/00
主分类号
E21B33/00
代理机构
代理人
主权项
地址
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