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摘要
左视图、右视图、仰视图、俯视图均无图案,故省略左视图、右视图、仰视图、俯视图。
申请公布号
CN3423800D
申请公布日期
2005.02.02
申请号
CN200430002213.5
申请日期
2004.02.13
申请人
北京盖伦教育发展有限公司
发明人
云关秋
分类号
25-02
主分类号
25-02
代理机构
代理人
主权项
地址
100875 北京市海淀区新外大街19号北京师范大学京师大厦9412A
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