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发明名称
COULTER FOR DENSE GRAIN SOWING
摘要
申请公布号
PL112070(B1)
申请公布日期
1980.09.30
申请号
PL19770199162
申请日期
1977.06.24
申请人
发明人
分类号
A01C;A01C7/20;(IPC1-7):A01C7/20
主分类号
A01C
代理机构
代理人
主权项
地址
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