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发明名称
可调节角度的多用途视力保护书夹
摘要
一种供学生使用的可调节角度的多用途视力保护书夹,在书夹托书板后面制有能折叠和伸缩的后支架,可任意调节角度,使托书板上的书与视线基本保持垂直,在托书板上制有方便学生使用的直尺、量角器和几何模板。
申请公布号
CN86209160U
申请公布日期
1987.12.09
申请号
CN86209160
申请日期
1986.11.13
申请人
李凤佳
发明人
李凤佳
分类号
A47B23/04
主分类号
A47B23/04
代理机构
代理人
主权项
1、一种供学习者使用的可调节角度的多用途视力保护书夹,它由托书板、和抽槽式后支架组成,其特征在于:所述可调部分是由呈牛角形的前支架(1)和抽槽式后支架(3)构成的。
地址
辽宁省鞍山市铁西七纬巷36-2号
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