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发明名称
Fine-grading machine
摘要
申请公布号
US2186059(A)
申请公布日期
1940.01.09
申请号
US19380217418
申请日期
1938.07.05
申请人
BAKER ROBERT D
发明人
BAKER ROBERT D.
分类号
E02F3/76
主分类号
E02F3/76
代理机构
代理人
主权项
地址
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