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发明名称
摘要
申请公布号
JPH02132739(U)
申请公布日期
1990.11.05
申请号
JP19890041468U
申请日期
1989.04.07
申请人
发明人
分类号
A01C1/04;E02D17/20;(IPC1-7):E02D17/20
主分类号
A01C1/04
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