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经营范围
发明名称
Differential pump
摘要
申请公布号
US2254103(A)
申请公布日期
1941.08.26
申请号
US19360074740
申请日期
1936.04.16
申请人
THE OILGEAR COMPANY
发明人
DOUGLAS JAMES K.
分类号
F04B1/04;F04B1/107;F04B23/10
主分类号
F04B1/04
代理机构
代理人
主权项
地址
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