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经营范围
发明名称
Sand separator
摘要
申请公布号
US2498913(A)
申请公布日期
1950.02.28
申请号
US19480019128
申请日期
1948.04.05
申请人
CLAYTON CLARENCE R
发明人
CLAYTON CLARENCE R.
分类号
E21B43/38
主分类号
E21B43/38
代理机构
代理人
主权项
地址
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