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发明名称
Device for facilitating the removal of a core from a barrel
摘要
申请公布号
US2049580(A)
申请公布日期
1936.08.04
申请号
US19330670837
申请日期
1933.05.13
申请人
GLOBE OIL TOOLS COMPANY
发明人
WRIGHT JESSE C.
分类号
E21B25/00
主分类号
E21B25/00
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代理人
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