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经营范围
发明名称
TEACHING FRAMES
摘要
申请公布号
GB8526296(D0)
申请公布日期
1985.11.27
申请号
GB19850026296
申请日期
1985.10.24
申请人
O'NEILL, J J
发明人
分类号
E02D17/08;(IPC1-7):E02D17/04
主分类号
E02D17/08
代理机构
代理人
主权项
地址
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