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发明名称
Selective load and position control for agricultural tractor
摘要
申请公布号
US2921638(A)
申请公布日期
1960.01.19
申请号
US19550516347
申请日期
1955.06.20
申请人
DEERE & COMPANY
发明人
SHANE WALLACE H. DU
分类号
A01B63/111
主分类号
A01B63/111
代理机构
代理人
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