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发明名称
Rake attachment for cultivators
摘要
申请公布号
US2171451(A)
申请公布日期
1939.08.29
申请号
US19380195139
申请日期
1938.03.10
申请人
FRANK MADDEN
发明人
MADDEN FRANK
分类号
A01B49/00
主分类号
A01B49/00
代理机构
代理人
主权项
地址
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