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发明名称
Socket connection
摘要
申请公布号
US2122244(A)
申请公布日期
1938.06.28
申请号
US19370161891
申请日期
1937.09.01
申请人
BROWN GOUVERNEUR G
发明人
BROWN GOUVERNEUR G.
分类号
E21B17/04
主分类号
E21B17/04
代理机构
代理人
主权项
地址
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