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发明名称
Gang harrow
摘要
申请公布号
US2985248(A)
申请公布日期
1961.05.23
申请号
US19600044807
申请日期
1960.07.22
申请人
RICHARDSON IRWIN W
发明人
RICHARDSON IRWIN W.
分类号
A01B23/04
主分类号
A01B23/04
代理机构
代理人
主权项
地址
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