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发明名称
Cement bailer
摘要
申请公布号
US2054314(A)
申请公布日期
1936.09.15
申请号
US19340720390
申请日期
1934.04.13
申请人
VIOLA E. CREEK;HAROLD C. CREEK
发明人
CREEK WALTER
分类号
E21B27/02
主分类号
E21B27/02
代理机构
代理人
主权项
地址
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