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发明名称
摘要
申请公布号
NL7115336(A)
申请公布日期
1972.05.19
申请号
NL19710015336
申请日期
1971.11.08
申请人
发明人
分类号
E02D13/00;(IPC1-7):E02D7/00
主分类号
E02D13/00
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代理人
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地址
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