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发明名称
Improvements in or relating to gear pumps
摘要
申请公布号
GB526260(A)
申请公布日期
1940.09.13
申请号
GB19390007878
申请日期
1939.03.10
申请人
JAMES PONTUS JOHNSON
发明人
分类号
F04C2/14;F04C2/18
主分类号
F04C2/14
代理机构
代理人
主权项
地址
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