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发明名称
Inside casing cutter
摘要
申请公布号
US1780100(A)
申请公布日期
1930.10.28
申请号
US19280275019
申请日期
1928.05.04
申请人
ERCOLE VENTRESCA
发明人
VENTRESCA ERCOLE
分类号
E21B29/00
主分类号
E21B29/00
代理机构
代理人
主权项
地址
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