首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
圆锥曲线规
摘要
一种圆锥曲线规。由普通圆规的左腿上带支撑架和右腿上带附腿组成。它利用正圆锥与平面切割,得各类圆锥曲线的原理,很方便的画出椭圆双曲线、抛物线。本实用新型结构简单,绘图方便准确,是广大师生及绘图人员的得力工具。
申请公布号
CN2172212Y
申请公布日期
1994.07.20
申请号
CN93214821.2
申请日期
1993.05.26
申请人
陈愉德
发明人
陈愉德;陈晓德;陈福德
分类号
B43L11/02
主分类号
B43L11/02
代理机构
代理人
主权项
1、一种圆锥曲线规,其特征在于该规是由定腿(1)带支撑架和轴腿(2)带画笔(3)组成。
地址
631145四川省重庆市江北县师范学校
您可能感兴趣的专利
COMMUNICATION SYSTEM WITH A NETWORK COMPRISING AN ADMINISTRATIVE UNIT
Male terminal fitting and method of producing the same.
Method and device for influencing the properties of biological substances which correlates with the appearance of atmospheric pulses radiation.
Matrix interpolation
Battery powered grass cutting device
Fluid meter
Multi-functional roasting receptacle
LABELLED DIAGNOSTIC COMPOSITIONS AND METHODS OF THEIR USE
Television signal receiver
Integral oil reservoir and filter unit
Improvements in and relating to furniture and other installations
METHOD AND DEVICE FOR INTRACORPOREAL KNOT TYING.
Printing roller drive
Embossed-pattern transfer sheet and method of pattern transfer
PRESSURE SENSITIVE ADHESIVES
Modular ligation clip applicator
Rotary stencil printing machine
Cast iron piston ring
Hand held plastic-bags carrier
Fabric finishing treatment