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发明名称
Paraffin tool
摘要
申请公布号
US3073391(A)
申请公布日期
1963.01.15
申请号
US19590823549
申请日期
1959.06.29
申请人
SOUTHERN RESEARCH AND SALES CORPORATION
发明人
HEBERT EDWIN
分类号
E21B37/02
主分类号
E21B37/02
代理机构
代理人
主权项
地址
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