| Patents for B43L 11 - Non-circular-curve-drawing instruments (856) |
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| 02/04/2015 | CN204136651U 多功能三角函数演示绘制仪 Multifunction trigonometric demonstration drawing instrument |
| 02/04/2015 | CN104332085A 反正余切正余割函数演示及图像绘制仪 Anyway, now I cotangent function demonstrates cutting instrument and image rendering |
| 01/28/2015 | CN204123858U 一种用于演示凸轮廓线绘制原理及其过程的教具 A demonstration convex contour drawing principles and process aids for |
| 01/28/2015 | CN104309371A 一种圆锥曲线绘制装置 One kind of conic drawing device |
| 01/28/2015 | CN102941762B 椭圆规 Oval regulation |
| 01/21/2015 | CN204109625U 多功能圆锥曲线规 Multifunction conic regulation |
| 01/21/2015 | CN204109624U 一种凸轮机构研究仪 One kind of cam mechanism research instrument |
| 01/21/2015 | CN104299508A 凸轮轮廓曲线绘制演示仪 Demonstrator drawing cam profile |
| 01/14/2015 | CN204102462U 反转法绘制凸轮轮廓曲线演示教具 Draw cam profile reversal Demonstrator |
| 01/14/2015 | CN104275970A 一种学生用椭圆仪及使用方法 One kind of student ellipsometer and method of use |
| 01/14/2015 | CN102673272B 一种高精度椭圆规 A high precision oval regulation |
| 01/07/2015 | CN204077168U 一种多功能椭圆规 A multifunctional oval regulation |
| 12/31/2014 | CN204055075U 凸轮廓线与凸轮顶尖运动曲线生成仪 Cam profile of the cam motion profiles generated top instrument |
| 12/31/2014 | CN204055074U 一种可画椭圆的圆规 One kind of compasses can draw an ellipse |
| 12/24/2014 | CN204037165U 参数曲线的绘图工具 Parametric curve drawing tool |
| 12/24/2014 | CN204037164U 新型两用规 The new dual-use regulation |
| 12/24/2014 | CN104228420A 二次函数坐标尺 Quadratic functions sitting ruler |
| 12/17/2014 | CN204020333U 一种数学授课椭圆画规 A mathematical teaching oval painting Regulation |
| 12/17/2014 | CN204020332U 一种可用于手工绘制椭圆的双齿条椭圆规 Oval double rack can be used to gauge a hand-painted oval |
| 12/17/2014 | CN204020331U 多功能尺子 Multifunctional ruler |
| 12/17/2014 | CN204020330U 一种圆锥曲线绘图仪 One kind of conic plotter |
| 12/17/2014 | CN204020324U 多功能教学圆规 Multifunctional compasses |
| 12/10/2014 | CN203995328U 一种双功能式凸轮轨迹绘图仪 A dual function cam track plotter |
| 12/10/2014 | CN203995327U 曲线块、凸轮轮廓曲线绘图仪 Curve block, cam profile plotter |
| 09/30/2014 | US8844146 Eyeglass frame shape measurement device |
| 08/13/2014 | CN203766338U 一种可变基圆渐开线发生仪 A variable base circle involute happen instrument |
| 08/13/2014 | CN203766337U 一种同心椭圆规 One kind of concentric ellipses regulation |
| 08/13/2014 | CN203766336U 椭圆规 Oval regulation |
| 08/13/2014 | CN103978815A 一种手动凸轮机构特征曲线绘制仪 A manual cam mechanism characteristic curve drawing instrument |
| 08/06/2014 | CN203752749U 渐开线绘制教具 Involute drawing aids |
| 08/06/2014 | CN203752748U 一种常见回转面相贯线正投影生成装置 A common rotary surface intersecting line orthographic generation device |
| 08/06/2014 | CN203752747U 一种正弦曲线绘图仪 One kind of the sine curve plotter |
| 07/30/2014 | CN103950326A 椭圆规 Oval Regulation |
| 07/30/2014 | CN103950325A 正弦曲线绘图仪 Sine curve plotter |
| 07/23/2014 | CN203727058U 用于教学演示的渐开线画线器 Involute draw the line is used for teaching demonstration |
| 07/23/2014 | CN203727057U 一种正切余切函数曲线辅助作图仪 One kind of tangent cotangent function curves plotted auxiliary instrument |
| 07/23/2014 | CN103935164A 一种椭圆仪 An Elliptical instrument |
| 07/23/2014 | CN103935163A 用毛笔绘制等宽波浪线的辅助装置 Brush with assistive devices and other wide wavy lines drawn |
| 07/16/2014 | CN103927930A 一种齿轮传动式齿轮范成仪 One kind of gear type gear Van into instrument |
| 07/09/2014 | CN203697787U 椭圆规 Oval Regulation |
| 07/09/2014 | CN203697786U 一种矩形框架椭圆长短轴、原点及焦点确定仪 One kind of rectangular frame ellipse minor axis, origin and determine the focus of instrument |
| 07/09/2014 | CN203697785U 一种教学用椭圆规 A teaching with oval regulation |
| 07/09/2014 | CN203697784U 双曲线绘图仪 Hyperbolic plotter |
| 07/09/2014 | CN203697783U 一种双曲线的速画装置 One kind of hyperbolic speed painting equipment |
| 07/09/2014 | CN103909772A 一种长短轴半径无级可调的椭圆规及其设计方法 An ellipse minor axis radius stepless adjustable regulations and design methods |
| 07/02/2014 | CN203681080U 一种教学用圆规 A teaching with a compass |
| 06/25/2014 | CN203666193U 一种改进型范成仪 An improved range into instrument |
| 06/25/2014 | CN203666192U 抛物线绘制工具 Parabola drawing tools |
| 06/25/2014 | CN103879203A 多功能椭圆仪 Multifunction ellipsometer |
| 06/18/2014 | CN203651275U 一种双笔芯椭圆规 A dual cartridge oval regulation |
| 06/18/2014 | CN203651274U 一种常见回转面相贯线生成仪 A common rotary surface intersecting line generation instrument |
| 06/11/2014 | CN203637403U 椭圆规 Oval regulation |
| 06/11/2014 | CN203637402U 正余弦画线规 Cosine painting Gauge |
| 06/11/2014 | CN103847363A Device for drawing ellipses on blackboard |
| 06/04/2014 | CN203631009U 尖顶直动从动件盘形凸轮的廓线生成演示装置 Spire translating follower disk cam profile generation demonstration device |
| 06/04/2014 | CN203623226U 几何参数可变型凸轮运动位移曲线绘制仪 The variable geometry type cam motion displacement curve drawing instrument |
| 06/04/2014 | CN103832170A Conicograph |
| 05/14/2014 | CN203592831U 二次曲线规 Conic Regulation |
| 04/30/2014 | CN203567417U Tool for drawing ellipse |
| 04/30/2014 | CN103754028A Elliptic trammels |
| 04/09/2014 | CN103707695A Elliptical and hyperbolic curve gauge |
| 04/09/2014 | CN103707694A Common rotative surface intersecting line generating instrument |
| 04/02/2014 | CN203511076U Involute divider calipers |
| 03/19/2014 | CN203485637U Elliptic plotter |
| 03/19/2014 | CN203485636U Ellipsograph |
| 03/12/2014 | CN203472351U Mathematical drawing device |
| 02/19/2014 | CN203438726U Ellipse instrument for mathematical teaching |
| 02/19/2014 | CN203438725U Curve plotter |
| 02/19/2014 | CN103587303A Gauge for drawing ellipses |
| 01/22/2014 | CN103522803A 椭圆规 Oval Regulation |
| 01/22/2014 | CN103522802A Double-refill elliptic trammel |
| 01/15/2014 | CN203391528U Multifunctional compasses |
| 01/08/2014 | CN203381392U 一种工程椭圆规 An engineering oval regulation |
| 01/08/2014 | CN203381391U Novel ellipsograph |
| 01/08/2014 | CN103496270A Multifunctional drawing ruler |
| 01/01/2014 | CN103481704A Elliptic trammel |
| 12/25/2013 | CN203358136U Magnetic ellipsograph |
| 12/25/2013 | CN203358135U 一种椭圆规 An Elliptical regulation |
| 12/11/2013 | CN203331649U Oval drawing instrument |
| 12/04/2013 | CN203325282U 椭圆教学仪 Oval teaching instrument |
| 11/27/2013 | CN203305730U Simple cycloid instrument |
| 11/20/2013 | EP2490902B1 A drawing device for creating mandala |
| 11/13/2013 | CN203282915U Leaf spring involute plotting instrument |
| 11/06/2013 | CN203267578U Multifunctional device for mathematics teaching |
| 11/06/2013 | CN203267577U Oval drawing board for teaching |
| 10/30/2013 | CN203254832U Fixed-focus ellipse plotting instrument |
| 10/30/2013 | CN203254831U 三角函数曲线绘图仪 Trigonometric graph plotter |
| 10/23/2013 | CN203246228U Ellipsograph |
| 10/16/2013 | CN103350595A Curve plotter |
| 09/04/2013 | CN203172290U Multifunctional teaching ruler |
| 08/21/2013 | CN203142181U Oval teaching aid |
| 08/21/2013 | CN102390202B Multifunctional divider calipers |
| 08/14/2013 | CN203126273U Novel ellipsometer |
| 08/07/2013 | CN203110693U Rapid sine wave drawing rule |
| 08/07/2013 | CN203110692U Multifunctional math teaching ruler device |
| 07/31/2013 | CN203093502U Novel ellipsograph |
| 07/31/2013 | CN203093495U Ruler capable of being used for ellipse drawing |
| 07/17/2013 | CN203063418U Teaching appliance for scribing ellipse in one step to demonstrate ellipse definition |
| 07/10/2013 | CN203046631U Engineering compass |
| 07/10/2013 | CN103192633A Curve plotter for trigonometric functions |