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发明名称
标准化考试用子弹铅笔芯
摘要
目前标准化考试越来越普及,规范地填涂机读答题卡很重要。本实用新型提供一种用于标准化考试的子弹铅笔芯,铅笔芯为扁条,用该子弹铅笔芯装配成的子弹铅笔,填涂答题卡,速度快,填涂质量好,制造成本低,可与木质铅笔竞争。
申请公布号
CN2340618Y
申请公布日期
1999.09.29
申请号
CN98217765.8
申请日期
1998.09.04
申请人
李国彬
发明人
李国彬
分类号
B43K19/18
主分类号
B43K19/18
代理机构
代理人
主权项
1、一种用于标准化考试的子弹换芯式活动铅笔芯,其特征在于铅芯为扁条形,扁条铅芯的横截面是由两圆孤和两平行线围成的几何形。
地址
224300江苏省射阳县耦耕乡蒲东村四组
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