| Patents for B43L 12 - Means to prevent slippage (552) | |
|---|---|
| 01/2015 | |
| 01/28/2015 | CN204123856U 一种带刻度的单臂白板圆规 Compasses a white arm band scale |
| 01/14/2015 | CN204095369U 可更换磁性黑白板擦 Black and white interchangeable magnetic eraser |
| 01/07/2015 | CN204070951U 一种粉笔收集盒 One kind of chalk collection box |
| 01/01/2015 | US20150000146 Identification structure for a patchwork ruler |
| 09/2014 | |
| 09/09/2014 | US8826789 Fabric ruler with raised edge guide and rotary cutting tool with groove for engaging the edge guides |
| 07/2014 | |
| 07/30/2014 | CN103950324A 便携式四自由度教学圆规 Portable four degrees of freedom of teaching compasses |
| 07/23/2014 | CN203727052U 数学教学用教学尺 Teaching mathematics teaching ruler |
| 07/09/2014 | CN203697780U 教学用电动圆规 Teaching with an electric compass |
| 07/02/2014 | CN203681080U 一种教学用圆规 A teaching with a compass |
| 06/2014 | |
| 06/04/2014 | CN103832161A Teaching ruler with magnetic attracting blocks |
| 05/2014 | |
| 05/14/2014 | CN103786497A 新型教学圆规 New Teaching compasses |
| 04/2014 | |
| 04/16/2014 | CN203543458U Novel English teaching ruler |
| 03/2014 | |
| 03/12/2014 | CN203472353U Compasses and circle center fixing device thereof |
| 03/12/2014 | CN101559687B Method for producing raised structures on surface of pencil |
| 02/2014 | |
| 02/12/2014 | CN103568661A Magnet retainer |
| 12/2013 | |
| 12/18/2013 | CN203344565U Triangular plate with magnet |
| 11/2013 | |
| 11/27/2013 | CN203305731U Ruler for teaching |
| 09/2013 | |
| 09/25/2013 | CN103317910A Set square with magnet |
| 09/04/2013 | CN203172279U Telescopic compasses |
| 08/2013 | |
| 08/28/2013 | CN203157502U Sucker-type compasses for mathematics teaching in universities |
| 08/14/2013 | CN203126271U Safe compasses |
| 08/14/2013 | CN203126265U Magnetic triangular ruler |
| 08/14/2013 | CN203126244U Writing board provided with compass magnetic center locator and used for teaching |
| 08/07/2013 | CN203110672U Multifunctional column-shaped ruler |
| 07/2013 | |
| 07/24/2013 | CN203078074U Ruler with magnetism |
| 07/24/2013 | CN203078071U Chalk compasses |
| 07/24/2013 | CN203078070U Compass with magnet and for teacher |
| 07/24/2013 | CN203078054U Magnet meter ruler |
| 07/24/2013 | CN103213428A Multifunctional teaching ruler and compass |
| 07/17/2013 | DE202013103061U1 Rutsch- und kratzfestes Patchworklineal Slip and scratch resistant Patchwork Ruler |
| 07/17/2013 | CN203063419U Magnetic felt for magnetic writing board |
| 07/17/2013 | CN203063417U Compasses for magnetic blackboard |
| 07/17/2013 | CN203063411U Magnetic blackboard ruler |
| 07/17/2013 | CN103204018A Magnetic black board, air inflation pen and adsorption teaching tool |
| 07/10/2013 | CN203046622U Magnetic meter ruler |
| 06/2013 | |
| 06/19/2013 | CN203004819U Magnetic eraser |
| 06/19/2013 | CN203004808U Combination drawing training aid |
| 06/19/2013 | CN203004799U Novel dual-purpose compass for blackboards |
| 06/19/2013 | CN203004798U Teaching aid-compass |
| 06/19/2013 | CN203004793U Convenience compasses |
| 06/12/2013 | CN202986527U Compasses special for finance |
| 06/12/2013 | CN202986526U Sucker locating type compasses |
| 06/12/2013 | CN103144470A Laser positioning compass |
| 06/05/2013 | CN202976566U A compass pointer |
| 06/05/2013 | CN103129259A Sucking disc type multipurpose compass |
| 05/2013 | |
| 05/29/2013 | CN103121357A Blackboard eraser provided with magnetic block and telescopic handle |
| 05/29/2013 | CN103121350A Sucking disc compasses |
| 05/15/2013 | CN202935031U Compasses for white board teaching |
| 05/15/2013 | CN202935030U Compasses for blackboard |
| 05/15/2013 | CN103101370A Anti-sliding compass |
| 05/08/2013 | CN202923224U Drawing instrument used for mathematics teaching |
| 05/01/2013 | CN202917049U Combined Chinese teaching aid |
| 05/01/2013 | CN202911391U Compasses for blackboard |
| 04/2013 | |
| 04/24/2013 | CN202896066U Multifunctional compasses for mathematical education |
| 04/24/2013 | CN202896055U Calligraphy practicing ruler |
| 04/17/2013 | CN202879041U Compasses |
| 04/17/2013 | CN202879040U Anti-slip compasses for teaching |
| 04/10/2013 | CN202862934U Novel compasses |
| 04/10/2013 | CN202862932U Dividers |
| 04/03/2013 | CN202847250U Magnetic teaching compasses |
| 04/03/2013 | CN202847249U Magnetic compass |
| 04/03/2013 | CN202847247U Dividers |
| 04/03/2013 | CN202847244U Novel compasses |
| 03/2013 | |
| 03/27/2013 | CN102991214A Compasses with sucker |
| 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 |
| 03/13/2013 | CN202782354U Teaching compasses disc for teachers |
| 03/13/2013 | CN202782353U Blackboard circle drawing instrument |
| 03/06/2013 | CN102950941A Compasses for whiteboard teaching |
| 02/2013 | |
| 02/20/2013 | CN202742924U Inkstone |
| 02/13/2013 | CN202727752U Novel drawing board |
| 02/13/2013 | CN202727746U Multifunctional learning system capable of stimulating learning interests |
| 02/06/2013 | CN102910005A Compasses applicable to any smooth surface |
| 01/2013 | |
| 01/30/2013 | CN202703023U Single-rod compass for instruction |
| 01/23/2013 | CN202685682U Teaching compasses |
| 01/23/2013 | CN202685680U Teaching compass capable of being used in various blackboards |
| 01/16/2013 | CN102874022A Teaching compasses |
| 01/16/2013 | CN102874021A 圆规 Compasses |
| 01/09/2013 | CN202656728U Teaching ruler |
| 01/09/2013 | CN102862423A Magnetic meter ruler |
| 01/02/2013 | CN202641164U Compasses with sucker |
| 01/02/2013 | CN102848822A Compasses with positioning plate |
| 12/2012 | |
| 12/26/2012 | CN202623704U Vertical gravity center compass |
| 12/26/2012 | CN202623703U Teaching compasses with suction cup |
| 12/19/2012 | CN202608358U Folding ruler for teaching |
| 12/19/2012 | CN202608353U Foldable drawing tool for teacher |
| 12/19/2012 | CN202608352U Magnetic compasses |
| 12/12/2012 | CN202593104U Novel blackboard eraser |
| 12/12/2012 | CN202593100U Novel blackboard eraser |
| 12/12/2012 | CN202593075U Compasses teaching aid |
| 12/05/2012 | CN202573534U Blackboard eraser |
| 12/05/2012 | CN202573442U Whiteboard writing pen |
| 11/2012 | |
| 11/28/2012 | CN202557080U Anti-slipping angle ruler |
| 11/21/2012 | CN202541114U Mathematic diagraph |
| 11/14/2012 | CN202528688U Novel compasses for blackboard |
| 11/07/2012 | CN102765283A Inkstone |
| 10/2012 | |
| 10/31/2012 | CN202507791U Four-line lattice scale for English letters |
| 10/31/2012 | CN202507780U Compasses |
| 10/24/2012 | CN202498900U Anti-slip and energy-saving teaching compass |