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发明名称
Soil saver
摘要
申请公布号
US1852983(A)
申请公布日期
1932.04.05
申请号
US19310531605
申请日期
1931.04.20
申请人
LUTHER SCOTT MARTIN
发明人
SCOTT MARTIN LUTHER
分类号
E02B13/00
主分类号
E02B13/00
代理机构
代理人
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