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发明名称
摘要
申请公布号
JPH0124164(Y2)
申请公布日期
1989.07.24
申请号
JP19830143871U
申请日期
1983.09.16
申请人
发明人
分类号
E01B7/24;(IPC1-7):E01B7/24
主分类号
E01B7/24
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代理人
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地址
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