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发明名称
摘要
申请公布号
JPH0667509(U)
申请公布日期
1994.09.22
申请号
JP19930816493U
申请日期
1993.03.02
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发明人
分类号
E01C23/12;(IPC1-7):E01C23/12
主分类号
E01C23/12
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