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发明名称
Improvements relating to hydro-extractors
摘要
申请公布号
GB667456(A)
申请公布日期
1952.02.27
申请号
GB19490012866
申请日期
1949.05.13
申请人
JOHN PHILIP SPENCER
发明人
分类号
D06F39/08
主分类号
D06F39/08
代理机构
代理人
主权项
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