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经营范围
发明名称
Improvements in or relating to rotary pumps
摘要
申请公布号
GB487278(A)
申请公布日期
1938.06.17
申请号
GB19370012549
申请日期
1937.05.03
申请人
ARTHUR JOHN NORTHEY
发明人
分类号
F04D5/00
主分类号
F04D5/00
代理机构
代理人
主权项
地址
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