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发明名称
摘要
申请公布号
JPH0310715(U)
申请公布日期
1991.01.31
申请号
JP19890069443U
申请日期
1989.06.14
申请人
发明人
分类号
A01C5/02;A01C9/00;(IPC1-7):A01C5/02
主分类号
A01C5/02
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