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发明名称
Cement basket
摘要
申请公布号
US3119451(A)
申请公布日期
1964.01.28
申请号
US19610081640
申请日期
1961.01.09
申请人
HALL JOHN A
发明人
HALL JOHN A.
分类号
E21B33/136
主分类号
E21B33/136
代理机构
代理人
主权项
地址
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