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发明名称
Automatic land leveler
摘要
申请公布号
US2503638(A)
申请公布日期
1950.04.11
申请号
US19480057669
申请日期
1948.11.01
申请人
SHUEY GEORGE E
发明人
SHUEY GEORGE E.
分类号
E02F3/84
主分类号
E02F3/84
代理机构
代理人
主权项
地址
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