| Patents for B43L 7 - Straightedges (3,964) |
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| 02/22/2012 | CN202147515U 一种多功能剖面线绘图工具 Hatch a versatile drawing tool |
| 02/22/2012 | CN102358095A Combined coordinate plotter |
| 02/21/2012 | US8117760 Wall mounting and alignment device |
| 02/16/2012 | US20120036726 Folding Rule Having a Lighting Element |
| 02/15/2012 | CN202144164U 可测量直径的直尺 Ruler to measure the diameter |
| 02/15/2012 | CN202144163U 带书写笔的可旋转量尺 Rotatable with pen ruler |
| 02/15/2012 | CN202144162U 一种教学用柔性磁条工具 A teaching tool with a flexible magnetic stripe |
| 02/15/2012 | CN102350909A Triangle with variable angles |
| 02/15/2012 | CN102350908A Ruler-compasses-angulometer |
| 02/15/2012 | CN102350894A Multifunctional bookmark capable of precisely positioning |
| 02/08/2012 | CN202138115U 多功能数学教学用具 Multifunction mathematics teaching aids |
| 02/08/2012 | CN202138114U 一种方便小尺子 A convenient small ruler |
| 02/07/2012 | CA2529791C Impact-absorbing end caps for levels |
| 02/01/2012 | CN202130189U 一次性画出双曲线的教学用具 Disposable draw hyperbolic teaching aids |
| 02/01/2012 | CN202130185U 一种圆规尺 One kind of compass ruler |
| 02/01/2012 | CN202130182U 绘平行线尺杆 Draw parallel lines foot pole |
| 02/01/2012 | CN202130181U 珠算尺 Abacus feet |
| 02/01/2012 | CN202130180U 一种便捷画线板 A convenient draw the line board |
| 02/01/2012 | CN102336099A Multifunctional drawing ruler for students |
| 02/01/2012 | CN102336096A Ruler bar for drawing parallel lines |
| 02/01/2012 | CN102336095A Electronic scale |
| 01/25/2012 | CN202126222U Steel tape capable of enabling user to draw straight lines |
| 01/25/2012 | CN202123855U Graphic scale for general chemical instruments |
| 01/25/2012 | CN202123854U Integrated learning ruler used for maths teaching |
| 01/25/2012 | CN202123848U Multifunctional ruler special for accounting |
| 01/25/2012 | CN202123847U Multifunctional teaching angle gage |
| 01/25/2012 | CN202123846U Convenient ruler |
| 01/25/2012 | CN102328534A Grid drawing ruler |
| 01/18/2012 | CN202121889U Ruler universal serial bus flash disk |
| 01/18/2012 | CN202119360U Tool set combination capable of measuring diameters of various geometric bodies |
| 01/18/2012 | CN202115199U Multifunctional mathematics teaching ruler |
| 01/18/2012 | CN202115198U Drawing board for mechanical drawing |
| 01/18/2012 | CN202115197U Multi-functional surveying and mapping instrument |
| 01/18/2012 | CN202115196U Simple stationery made of waste materials |
| 01/18/2012 | CN202115195U Positioning halving device for garment processing |
| 01/18/2012 | CN102320203A Combined engineering ruler |
| 01/18/2012 | CN102320202A Ruler with picture insertion slot |
| 01/17/2012 | US8096058 Measuring device |
| 01/12/2012 | US20120005909 Plan orientation template |
| 01/11/2012 | CN202106761U Simple ruler for drawing form |
| 01/11/2012 | CN202106759U Mathematical teaching aid |
| 01/11/2012 | CN202106756U Ruler for drawing parallelograms |
| 01/11/2012 | CN202106755U Length adjustable ruler |
| 01/11/2012 | CN202106754U Multipurpose compass measuring ruler |
| 01/11/2012 | CN202106753U T-square capable of drawing 45-degree chamfer angles |
| 01/11/2012 | CN202106752U Novel ruler |
| 01/11/2012 | CN202106751U Ruler for drawing circles arbitrarily |
| 01/11/2012 | CN202106750U Ruler with pen bag |
| 01/11/2012 | CN102310692A Functional compass |
| 01/04/2012 | CN202098193U Multifunctional drawing tool used for teaching |
| 01/04/2012 | CN202098188U Mathematics teaching aid |
| 01/04/2012 | CN202098187U Novel ruler |
| 01/04/2012 | CN202098186U Magnifying ruler |
| 01/04/2012 | CN202098185U Ruler with magnifier |
| 01/04/2012 | CN202098184U Ruler for drawing grids |
| 01/04/2012 | CN202098183U Three-dimensional multi-functional straight ruler |
| 01/04/2012 | CN202098182U Multipurpose ruler |
| 01/04/2012 | CN202098181U Multifunctional architectural decoration drawing template |
| 01/03/2012 | US8087177 Level |
| 01/03/2012 | CA2529795C Structure and method for holding and protecting vials in levels |
| 12/28/2011 | CN202088744U 测绘尺 Mapping foot |
| 12/28/2011 | CN202088743U 复合尺 Composite feet |
| 12/28/2011 | CN202088742U Portable and multifunctional drawing rule |
| 12/28/2011 | CN202088741U 多功能尺子 Multifunctional ruler |
| 12/28/2011 | CN102294924A 一种绘图直尺 One kind of drawing ruler |
| 12/21/2011 | CN202080002U 一种数学教具 A mathematical teaching aids |
| 12/21/2011 | CN202080001U 一种宗地简图绘制仪 One kind of instrument cases to draw sketch |
| 12/21/2011 | CN202080000U 多功能教学尺 Multifunctional foot |
| 12/21/2011 | CN202079999U 内嵌式刻度尺 Embedded scale |
| 12/21/2011 | CN202079998U 便携式多功能尺子 Portable multifunction ruler |
| 12/21/2011 | CN202079997U 一种弓形的尺子 One kind of arched ruler |
| 12/21/2011 | CN202079996U 带时刻表的尺子 Ruler with timetable |
| 12/21/2011 | CN202079995U 一种尺子 One kind of ruler |
| 12/21/2011 | CN202079994U 注塑集成刻度及装饰的尺 Injection molding and decorative foot scale integration |
| 12/21/2011 | CN102285282A 具有画虚线模块的直尺 Has drawn dashed module ruler |
| 12/14/2011 | CN202071589U 平行线、垂线演示板 Parallel lines, perpendicular to the demo board |
| 12/14/2011 | CN202071587U 多功能作图尺 Multifunction foot plot |
| 12/14/2011 | CN202071586U 一种数学教学用椭圆仪 A mathematical teaching ellipsometer |
| 12/14/2011 | CN202071584U 折叠尺 Folding ruler |
| 12/14/2011 | CN202071583U 多功能量角画弧器 Multifunction devices draw an arc protractor |
| 12/14/2011 | CN202071582U 一种多功能尺子 A multifunctional ruler |
| 12/14/2011 | CN202071581U 尺子 Ruler |
| 12/14/2011 | CN102275427A 地球运动教学演示用具 Earth movement teaching demonstration equipment |
| 12/13/2011 | US8074368 Hinged measuring and marking device |
| 12/13/2011 | DE202011107913U1 Linealartige Markierungsvorrichtung zum Anzeichnen von Markierungen auf der Spielfläche von Billardtischen Ruler-like marking device for marking markings on the playing surface of pool tables |
| 12/08/2011 | WO2011152863A2 Straight edge circle tool |
| 12/08/2011 | US20110296700 Straight edge circle tool |
| 12/07/2011 | CN202062902U 带重垂指针的教学三角板 Teaching with heavy hanging triangle pointer |
| 12/07/2011 | CN202062901U 新型圆规 The new Compass |
| 12/07/2011 | CN202062899U 轴舵承划圆工具 Tools rudder shaft round draw |
| 12/07/2011 | CN202062898U 一种数学教学辅助教具 A mathematical teaching aids aids |
| 12/07/2011 | CN202062897U 教学用圆规尺 Teaching with a compass ruler |
| 12/07/2011 | CN202062896U 英语考试机读答卷尺 A tape machine readable English exam |
| 12/07/2011 | CN202062895U 多功能尺子 Multifunctional ruler |
| 12/07/2011 | CN202062894U 一种可做教杆的数学教具尺 A mathematical teaching aids do foot pole |
| 12/07/2011 | CN202062893U 一种多功能绘图板 A versatile drawing board |
| 12/07/2011 | CN102267323A 直尺刀 Ruler Knife |
| 11/30/2011 | CN202053794U 管道弯头下料样板图样绘制仪 Pipe elbows cutting template pattern drawing instrument |
| 11/30/2011 | CN202053789U 多功能尺子 Multifunctional ruler |
| 11/30/2011 | CN202053788U 一种组合尺 A combination feet |