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发明名称
摘要
申请公布号
DE2009212(A1)
申请公布日期
1970.12.23
申请号
DE19702009212
申请日期
1970.02.27
申请人
发明人
分类号
E03C1/232;(IPC1-7):E03C/
主分类号
E03C1/232
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地址
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