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经营范围
发明名称
Casing cutter
摘要
申请公布号
US1947726(A)
申请公布日期
1934.02.20
申请号
US19310538173
申请日期
1931.05.18
申请人
MCCULLOUGH IRA J
发明人
MCCULLOUGH IRA J.
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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