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发明名称
Speed responsive device for planters
摘要
申请公布号
US2581286(A)
申请公布日期
1952.01.01
申请号
US19490125690
申请日期
1949.11.05
申请人
DEERE & COMPANY
发明人
OEHLER WILLIAM P.
分类号
A01C7/18
主分类号
A01C7/18
代理机构
代理人
主权项
地址
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