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发明名称
Bit
摘要
申请公布号
US2425132(A)
申请公布日期
1947.08.05
申请号
US19460712770
申请日期
1946.11.29
申请人
ARCHER STOKES STANLEY
发明人
STOKES STANLEY ARCHER
分类号
E21B10/44
主分类号
E21B10/44
代理机构
代理人
主权项
地址
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