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发明名称
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摘要
申请公布号
US2608813(A)
申请公布日期
1952.09.02
申请号
US19480005785
申请日期
1948.02.02
申请人
JOHN DEERE KILLEFER COMPANY
发明人
FRANK WILLIAM R.
分类号
A01B21/08
主分类号
A01B21/08
代理机构
代理人
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