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经营范围
发明名称
Hydropneumatic pumping jack
摘要
申请公布号
US2363142(A)
申请公布日期
1944.11.21
申请号
US19410396700
申请日期
1941.06.05
申请人
REED WARREN B
发明人
REED WARREN B.
分类号
F04B47/04
主分类号
F04B47/04
代理机构
代理人
主权项
地址
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