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发明名称
摘要
申请公布号
SU362896(A1)
申请公布日期
1972.12.30
申请号
SU19701403541
申请日期
1970.02.12
申请人
发明人
分类号
E02F3/12;(IPC1-7):E02F3/12
主分类号
E02F3/12
代理机构
代理人
主权项
地址
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