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粉笔(1)
摘要
后视图与主视图相同,省略后视图;
申请公布号
CN3053345D
申请公布日期
1997.01.08
申请号
CN96300179.5
申请日期
1996.01.05
申请人
林国清
发明人
林国清
分类号
19-06-C0277
主分类号
19-06-C0277
代理机构
北京市专利事务所
代理人
王德桢
主权项
地址
063000河北省唐山市乐亭镇政府文教组
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