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发明名称
Improvements in steerage hoes
摘要
申请公布号
GB854761(A)
申请公布日期
1960.11.23
申请号
GB19590037216
申请日期
1956.03.21
申请人
ARTHUR CLIVE NICHOLSON
发明人
分类号
A01B39/18;A01B39/22;A01B69/06
主分类号
A01B39/18
代理机构
代理人
主权项
地址
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