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发明名称
Disk harrow
摘要
申请公布号
US2180458(A)
申请公布日期
1939.11.21
申请号
US19380223841
申请日期
1938.08.09
申请人
CLASEN JOHN H
发明人
CLASEN JOHN H.
分类号
A01B21/08
主分类号
A01B21/08
代理机构
代理人
主权项
地址
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