| Patents for B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for (6,769) |
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| 07/31/2013 | CN203093511U Length measurer for pen |
| 07/31/2013 | CN203093510U Novel account-keeping ruler for accountant |
| 07/31/2013 | CN203093509U Chalk and blackboard eraser storage trolley |
| 07/31/2013 | CN203093508U Multifunctional learning tool ruler |
| 07/31/2013 | CN203093507U Multipurpose grid for painting and calligraphy |
| 07/31/2013 | CN203093506U Ruler set combination |
| 07/31/2013 | CN203093505U 多功能尺子 Multifunctional ruler |
| 07/31/2013 | CN203093504U Multifunctional set square |
| 07/31/2013 | CN203093503U Portable multi-functional drawing device |
| 07/31/2013 | CN203093496U Multifunctional drawing device |
| 07/31/2013 | CN203093492U Potable ruler |
| 07/31/2013 | CN203093491U 多功能直尺 Multifunctional ruler |
| 07/31/2013 | CN203093488U Multi-functional ruler |
| 07/25/2013 | WO2013109803A1 A scalable ruler capable of creating size-adjustable circles, arcs, & curved shapes |
| 07/24/2013 | CN203078087U Simple grid drawing device |
| 07/24/2013 | CN203078086U Combined ruler for mathematical education |
| 07/24/2013 | CN203078085U Multi-functional ruler |
| 07/24/2013 | CN203078084U Painting and calligraphy water-writing fabric |
| 07/24/2013 | CN203078083U Combined ruler for marketing statistic analysis |
| 07/24/2013 | CN203078082U Combination ruler for economic management major |
| 07/24/2013 | CN203078081U Ruler for statistics |
| 07/24/2013 | CN203078080U Compasses clamping sleeve with blade and dividing ruler |
| 07/24/2013 | CN203078079U Novel graphometer |
| 07/24/2013 | CN203078078U Multifunctional specially-used drawing tool |
| 07/24/2013 | CN203078077U Ruler provided with calculator |
| 07/24/2013 | CN203078076U Automatic transcribing machine |
| 07/24/2013 | CN203078075U Multifunctional ruler |
| 07/24/2013 | CN203078074U Ruler with magnetism |
| 07/24/2013 | CN203078065U Ruler |
| 07/24/2013 | CN203078060U Multifunctional straight scale |
| 07/24/2013 | CN103217084A Diameter scribing ruler |
| 07/24/2013 | CN103213431A Five-line pen |
| 07/24/2013 | CN103213430A Multifunctional stationery board |
| 07/24/2013 | CN103213429A Protractor ruler |
| 07/17/2013 | CN203069074U Positioning ruler used for measurement and line connection in junior-grade mathematics |
| 07/17/2013 | CN203063430U Multifunctional ruler |
| 07/17/2013 | CN203063429U Compasses for artwork painting |
| 07/17/2013 | CN203063428U Teaching aid device for mathematics teaching |
| 07/17/2013 | CN203063427U Multifunctional angle-measuring ruler |
| 07/17/2013 | CN203063426U Scale with pencil sharpeners |
| 07/17/2013 | CN203063425U Ruler with screwdriver |
| 07/17/2013 | CN203063424U Ruler with magnet |
| 07/17/2013 | CN203063423U Combined mathematic teaching aid |
| 07/17/2013 | CN203063422U Ruler for accounting major teaching |
| 07/17/2013 | CN203063421U Drawing board device for teaching of middle school physics |
| 07/17/2013 | CN203063420U Protractor |
| 07/17/2013 | CN203063414U Multifunctional folding ruler |
| 07/17/2013 | CN203063409U Novel office multifunctional ruler for financial staff |
| 07/10/2013 | CN203053338U Multifunctional measuring tape |
| 07/10/2013 | CN203046640U Four-line three-grid scribing device for English teaching |
| 07/10/2013 | CN203046639U Drawing ruler |
| 07/10/2013 | CN203046638U Multipurpose ruler for drawing lines for teaching |
| 07/10/2013 | CN203046637U Line drawing device on blackboard |
| 07/10/2013 | CN203046636U Multifunctional drawing tool |
| 07/10/2013 | CN203046635U Auxiliary device for mathematics teaching |
| 07/10/2013 | CN203046634U Multifunctional ruler for teaching |
| 07/10/2013 | CN203046633U Detachable dividing ruler |
| 07/10/2013 | CN203046632U Multifunctional ruler for accountant convenient and fast to use |
| 07/10/2013 | CN203046621U Multifunctional ruler for assisting review for pupils |
| 07/10/2013 | CN203046588U Line-drawing tool for English teaching in primary school |
| 07/10/2013 | CN103192634A Rule |
| 07/03/2013 | CN203032220U English teaching instrument for universities and colleges |
| 07/03/2013 | CN203032219U Chinese teaching pinyin writing board |
| 07/03/2013 | CN203032218U Chalk box on side of blackboard |
| 07/03/2013 | CN203032217U Angular bisector drawing auxiliary device for teaching |
| 07/03/2013 | CN203032216U Dashed line drawing aids for blackboard drawing |
| 07/03/2013 | CN203032215U Higher mathematic drawing device |
| 07/03/2013 | CN203032214U Cutting ruler accurate in positioning |
| 07/03/2013 | CN203032213U Auxiliary blackboard side teaching box |
| 07/03/2013 | CN203032212U Mathematical teaching ruler |
| 07/03/2013 | CN203032211U Chinese teaching square grid ruler |
| 07/03/2013 | CN203032210U Residence community scheme rapid design charting template |
| 07/03/2013 | CN203032209U Angle drawing protractor convenient to use |
| 07/03/2013 | CN203032208U Multifunctional set square |
| 07/03/2013 | CN203032202U Compasses |
| 07/03/2013 | CN203032194U Automatically-adjustable teaching blackboard with horizontal coordinatometer and vertical coordinatometer |
| 06/26/2013 | CN203025970U Numerical control whiteboard drawing instrument for teaching |
| 06/26/2013 | CN203019920U Multifunctional ruler for university mathematics |
| 06/26/2013 | CN203019919U Multifunctional English teaching device |
| 06/26/2013 | CN203019918U Novel drawing rule |
| 06/26/2013 | CN203019917U Multifunctional drawing board for plotting |
| 06/26/2013 | CN203019916U Special ruler for international economy and trade |
| 06/26/2013 | CN203019915U Teaching tool adopted in mathematical teaching |
| 06/26/2013 | CN203019914U Multifunctional teaching ruler |
| 06/26/2013 | CN203019909U Multifunctional ruler |
| 06/25/2013 | US8468703 Image card, image engraving device and image engraving method |
| 06/19/2013 | CN203011360U Length measurer |
| 06/19/2013 | CN203004814U Multifunctional drawing board for economics teaching |
| 06/19/2013 | CN203004813U Learning ruler |
| 06/19/2013 | CN203004812U English teaching appliance |
| 06/19/2013 | CN203004811U Scriber for English teaching |
| 06/19/2013 | CN203004810U Four wire grid drawing device in English teaching |
| 06/19/2013 | CN203004809U Device for quickly measuring and drawing angle |
| 06/19/2013 | CN203004808U Combination drawing training aid |
| 06/19/2013 | CN203004807U Character learning tool ruler for Chinese teaching |
| 06/19/2013 | CN203004806U Pen ruler |
| 06/19/2013 | CN203004805U Multifunctional ruler |
| 06/19/2013 | CN203004804U Protractor convenient to use |
| 06/19/2013 | CN203004803U Protractor with straight ruler |
| 06/19/2013 | CN203004802U Multifunctional plotter |