| Patents for B43L 9 - Circular curve-drawing or like instruments (2,793) | |
|---|---|
| 04/2013 | |
| 04/17/2013 | CN202879048U Novel plotting instrument |
| 04/17/2013 | CN202879041U Compasses |
| 04/17/2013 | CN202879040U Anti-slip compasses for teaching |
| 04/17/2013 | CN202879039U Portable and multifunctional teaching instrument |
| 04/17/2013 | CN202879038U Multifunctional compass |
| 04/17/2013 | CN202879037U Compass capable of fixing pencil conveniently |
| 04/17/2013 | CN202879033U Multimedia teaching set square |
| 04/17/2013 | CN202879029U Multi-functional drawing ruler for math teaching |
| 04/17/2013 | CN103042865A Teaching multipurpose ruler |
| 04/10/2013 | EP2576239A1 Quick-adjustment compass having spindle guide |
| 04/10/2013 | CN202862934U Novel compasses |
| 04/10/2013 | CN202862933U Dividers |
| 04/10/2013 | CN202862932U Dividers |
| 04/10/2013 | CN202862931U Self-centering compasses |
| 04/10/2013 | CN202862926U Multifunctional ruler |
| 04/03/2013 | CN202847250U Magnetic teaching compasses |
| 04/03/2013 | CN202847249U Magnetic compass |
| 04/03/2013 | CN202847248U Novel compasses |
| 04/03/2013 | CN202847247U Dividers |
| 04/03/2013 | CN202847246U Hand pricking prevention compass |
| 04/03/2013 | CN202847245U Simple combined compass |
| 04/03/2013 | CN202847244U Novel compasses |
| 04/03/2013 | CN103009885A Hand-operated type compass without sharp point |
| 04/03/2013 | CN103009884A Ruler compasses |
| 03/2013 | |
| 03/27/2013 | CN202826867U Improved compasses head structure |
| 03/27/2013 | CN202826866U Compass brush |
| 03/27/2013 | CN202826865U Caliper compasses |
| 03/27/2013 | CN202826864U Marking tool for concentric circles and parallel lines |
| 03/27/2013 | CN202826863U Math teaching aid for drawing circles on blackboard |
| 03/27/2013 | CN202826860U Multifunctional student ruler |
| 03/27/2013 | CN202826855U Portable mathematical education board |
| 03/27/2013 | CN202826847U Deformable compass pen |
| 03/27/2013 | CN102991215A Compasses |
| 03/27/2013 | CN102991214A Compasses with sucker |
| 03/27/2013 | CN102991213A Compass with eraser head |
| 03/21/2013 | WO2012094717A8 Multifunctional writing, reading and drawing aid |
| 03/20/2013 | CN202806081U Compasses for mathematical teaching |
| 03/20/2013 | CN202806080U Compasses with sucking plate and arc-shaped ruler for teaching |
| 03/20/2013 | CN202806079U 直尺式教学圆规 Teaching compass ruler |
| 03/20/2013 | CN202806078U Foldable compasses |
| 03/20/2013 | CN202806077U 多功能教学尺 Multifunctional foot |
| 03/20/2013 | CN102985265A Quick-adjustment compass having spindle guide |
| 03/20/2013 | CN102975532A Anti-slipping compasses |
| 03/20/2013 | CN101412340B Mobile type drawing disk |
| 03/13/2013 | CN202782362U Compass for mathematical teaching |
| 03/13/2013 | CN202782361U Compasses capable of fixing ruler |
| 03/13/2013 | CN202782360U Compass with ruler |
| 03/13/2013 | CN202782359U Compasses for student |
| 03/13/2013 | CN202782358U Compasses |
| 03/13/2013 | CN202782357U Compasses for drawing circle for positioning and boring hole in pipeline |
| 03/13/2013 | CN202782356U Combined multiple-leg compasses |
| 03/13/2013 | CN202782355U Compasses |
| 03/13/2013 | CN202782354U Teaching compasses disc for teachers |
| 03/13/2013 | CN202782353U Blackboard circle drawing instrument |
| 03/13/2013 | CN202782346U Ruler capable of drawing round |
| 03/13/2013 | CN102963180A Compasses capable of drawing concentric circles |
| 03/13/2013 | CN102963179A Speed-variable convenient compasses |
| 03/13/2013 | CN102963176A Multifunctional ruler |
| 03/06/2013 | CN202764540U Multifunctional teaching aid |
| 03/06/2013 | CN202764535U Multipurpose compass |
| 03/06/2013 | CN202764531U Multifunctional ruler |
| 03/06/2013 | CN102950941A Compasses for whiteboard teaching |
| 02/2013 | |
| 02/27/2013 | CN202753656U Compass for teaching |
| 02/27/2013 | CN202753655U Compasses for teaching |
| 02/27/2013 | CN102941762A Ellipsograph |
| 02/20/2013 | CN202742908U Combined drawing rule |
| 02/20/2013 | CN202742905U Compass for directly determining radius and diameter |
| 02/20/2013 | CN202742904U Multi-functional compasses |
| 02/13/2013 | CN202727749U Plastic compasses |
| 02/13/2013 | CN202727748U Novel compasses |
| 02/13/2013 | CN202727747U Compasses capable of measuring radius and drawing circle |
| 02/13/2013 | CN202727746U Multifunctional learning system capable of stimulating learning interests |
| 02/12/2013 | US8371035 Combined set of interacting instruments |
| 02/06/2013 | CN202716633U Compass with non-sharpen pinhead |
| 02/06/2013 | CN202716632U Compass with self-setting radius |
| 02/06/2013 | CN102910005A Compasses applicable to any smooth surface |
| 02/01/2013 | DE202012000623U1 Zirkel mit einem Schenkel, der in einem Hohlraum einen Füllkörper mit rutschhemmender Oberfläche aufweist, besonders eine Griffeinlage Circle with a leg having a packing slip-resistant surface in a cavity, particularly a handle inlay |
| 01/2013 | |
| 01/30/2013 | CN202703023U Single-rod compass for instruction |
| 01/30/2013 | CN202703022U Compasses for instructional demonstration |
| 01/30/2013 | CN202703021U 多功能绘图圆规 Multifunctional drawing compasses |
| 01/30/2013 | CN202702967U Multi-functional chalk sleeve |
| 01/30/2013 | CN102896942A Pen |
| 01/23/2013 | CN202685686U Compass ruler for mathematics teaching |
| 01/23/2013 | CN202685685U Foldable compasses |
| 01/23/2013 | CN202685684U Teaching aid compasses |
| 01/23/2013 | CN202685683U Convenient compasses |
| 01/23/2013 | CN202685682U Teaching compasses |
| 01/23/2013 | CN202685681U Compasses with angles capable of being fixed |
| 01/23/2013 | CN202685680U Teaching compass capable of being used in various blackboards |
| 01/23/2013 | CN202685649U Multi-functional compasses pen |
| 01/23/2013 | CN102887017A Compass |
| 01/16/2013 | CN202669307U Novel teaching compass |
| 01/16/2013 | CN202669306U Compass with self-stored pencil leads |
| 01/16/2013 | CN202669305U Ruler bringing convenience to circle drawing |
| 01/16/2013 | CN102874022A Teaching compasses |
| 01/16/2013 | CN102874021A 圆规 Compasses |
| 01/09/2013 | CN202656727U Multifunctional compasses |
| 01/09/2013 | CN202656726U Simple compasses |
| 01/09/2013 | CN202656725U Convenient compasses |
| 01/09/2013 | CN202656724U Scale for compasses |