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发明名称
摘要
申请公布号
JPH0142974(Y2)
申请公布日期
1989.12.14
申请号
JP19840019621U
申请日期
1984.02.13
申请人
发明人
分类号
A01C7/12;A01C7/20;(IPC1-7):A01C7/20
主分类号
A01C7/12
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代理人
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