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发明名称
Pumping unit
摘要
申请公布号
US2161298(A)
申请公布日期
1939.06.06
申请号
US19380205445
申请日期
1938.05.02
申请人
JACKSON PAUL C
发明人
JACKSON PAUL C.
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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