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经营范围
发明名称
Improvements in and relating to pump impellers
摘要
申请公布号
GB813133(A)
申请公布日期
1959.05.06
申请号
GB19560024436
申请日期
1956.08.09
申请人
RALPH EDGAR SMART
发明人
分类号
F04D29/22
主分类号
F04D29/22
代理机构
代理人
主权项
地址
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