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经营范围
发明名称
Pumping system
摘要
申请公布号
US2670692(A)
申请公布日期
1954.03.02
申请号
US19490133984
申请日期
1949.12.20
申请人
SUN OIL COMPANY
发明人
JR. EDWARD J. GRACE,
分类号
F04B53/10;F16K13/10
主分类号
F04B53/10
代理机构
代理人
主权项
地址
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