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发明名称
摘要
申请公布号
HU168209(B)
申请公布日期
1976.03.28
申请号
HU1970EO00243
申请日期
1970.10.09
申请人
发明人
分类号
E03D9/05;(IPC1-7):E03D9/05
主分类号
E03D9/05
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