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发明名称
Plough
摘要
申请公布号
GB2050782(A)
申请公布日期
1981.01.14
申请号
GB19790022364
申请日期
1979.06.27
申请人
BROWN E N L
发明人
分类号
A01B15/18;A01B17/00
主分类号
A01B15/18
代理机构
代理人
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