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发明名称
Grass root planter
摘要
申请公布号
US2889959(A)
申请公布日期
1959.06.09
申请号
US19560594524
申请日期
1956.06.28
申请人
LANDGRAF DAVID C
发明人
LANDGRAF DAVID C.
分类号
A01C11/00
主分类号
A01C11/00
代理机构
代理人
主权项
地址
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