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发明名称
Device for obtaining impression
摘要
申请公布号
US3049752(A)
申请公布日期
1962.08.21
申请号
US19590861471
申请日期
1959.12.23
申请人
SHELL OIL COMPANY
发明人
JORDA ROBERT M.;YACHIK ROYAL P.
分类号
E21B47/09
主分类号
E21B47/09
代理机构
代理人
主权项
地址
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