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发明名称
摘要
申请公布号
JPH04117550(U)
申请公布日期
1992.10.21
申请号
JP19910031149U
申请日期
1991.04.05
申请人
发明人
分类号
A01F12/30;A01F12/32;(IPC1-7):A01F12/32
主分类号
A01F12/30
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