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经营范围
发明名称
Bushing for rotary tables
摘要
申请公布号
US2160516(A)
申请公布日期
1939.05.30
申请号
US19370139960
申请日期
1937.04.30
申请人
THE GUIBERSON CORPORATION
发明人
PRANGER ALBERT
分类号
E21B3/04
主分类号
E21B3/04
代理机构
代理人
主权项
地址
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