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发明名称
Seed planter
摘要
申请公布号
US2039485(A)
申请公布日期
1936.05.05
申请号
US19340756024
申请日期
1934.12.05
申请人
HOLLIS GRADY W
发明人
HOLLIS GRADY W.
分类号
A01C7/18
主分类号
A01C7/18
代理机构
代理人
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