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发明名称
Pumping apparatus
摘要
申请公布号
US2134326(A)
申请公布日期
1938.10.25
申请号
US19360079376
申请日期
1936.05.12
申请人
THE PARKERSBURG RIG & REEL COMPANY
发明人
MATER ROBERT GRIFFIN DE LA
分类号
F04B47/02
主分类号
F04B47/02
代理机构
代理人
主权项
地址
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