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发明名称
Pumping unit
摘要
申请公布号
US1953606(A)
申请公布日期
1934.04.03
申请号
US19320602670
申请日期
1932.04.02
申请人
GEO. D. ROPER CORPORATION
发明人
HOBSON STANLEY H.
分类号
F04C13/00
主分类号
F04C13/00
代理机构
代理人
主权项
地址
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