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经营范围
发明名称
Apparatus for preparing soil for planting
摘要
申请公布号
US2693746(A)
申请公布日期
1954.11.09
申请号
US19490078796
申请日期
1949.02.28
申请人
WILLIAM KLEIN
发明人
KLEIN WILLIAM
分类号
A01B77/00
主分类号
A01B77/00
代理机构
代理人
主权项
地址
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