| Patents for B43L 12 - Means to prevent slippage (552) | |
|---|---|
| 08/2009 | |
| 08/05/2009 | CN101497293A Multipurpose educational compasses |
| 05/2009 | |
| 05/27/2009 | CN201245011Y Magnetic elliptic compasses |
| 05/27/2009 | CN201245010Y Compasses with magnet |
| 05/27/2009 | CN201245001Y Novel blackboard |
| 05/20/2009 | CN201240180Y Magnetic attraction mute blackboard drawing set square |
| 05/20/2009 | CN201240177Y Multipurpose educational compasses |
| 05/20/2009 | CN101434164A Blackboard eraser |
| 04/2009 | |
| 04/15/2009 | CN201220547Y Compass |
| 04/08/2009 | CN201217335Y Compasses for teaching |
| 04/08/2009 | CN201217334Y Compasses for teaching |
| 04/01/2009 | CN201214347Y Teaching compasses |
| 04/01/2009 | CN201214345Y Telescopic straight ruler |
| 03/2009 | |
| 03/25/2009 | CN201211796Y Teaching compasses |
| 03/25/2009 | CN201211795Y Sucking disc compasses |
| 03/04/2009 | CN201201444Y Simple elliptic compasses |
| 03/04/2009 | CN201201443Y Multifunctional compasses |
| 03/04/2009 | CN201201442Y Compasses for teaching |
| 03/04/2009 | CN201201441Y Combined type educational compasses |
| 03/04/2009 | CN201201439Y Compasses |
| 02/2009 | |
| 02/04/2009 | CN201189786Y Hyperbolic curve gauge |
| 02/04/2009 | CN201189785Y Novel omnipotent compasses and rule |
| 01/2009 | |
| 01/21/2009 | CN201183422Y Blackboard eraser with magnet block |
| 01/21/2009 | CN201183411Y Multifunction compasses |
| 01/14/2009 | CN201179801Y Ruler |
| 01/14/2009 | CN201179795Y Multifunctional ruler |
| 01/07/2009 | CN201176081Y Multipurpose ruler |
| 12/2008 | |
| 12/24/2008 | CN201169163Y Novel self-suction type compasses |
| 12/24/2008 | CN201169162Y Novel straight ruler |
| 12/17/2008 | CN201165142Y Educational compasses |
| 12/10/2008 | CN201161507Y Suction disc type compasses for teaching |
| 11/2008 | |
| 11/26/2008 | CN201154626Y Set square |
| 11/12/2008 | CN201148077Y Big compasses |
| 11/12/2008 | CN101301835A Compasses foot locater |
| 10/2008 | |
| 10/29/2008 | CN201140625Y Suction disc type compasses for teaching |
| 10/29/2008 | CN201140624Y Educational compasses with suction disc |
| 10/22/2008 | CN201136389Y Articles for drafting demonstration in teaching |
| 10/15/2008 | CN201132452Y Novel bow compass |
| 10/15/2008 | CN101284474A Compasses for teaching |
| 10/14/2008 | US7434509 Guide system for forming ink images |
| 10/08/2008 | CN201128326Y Multipurpose rule gauge with sucker |
| 10/01/2008 | CN201124693Y Novel rubber eraser |
| 10/01/2008 | CN201124681Y Drawing apparatus |
| 10/01/2008 | CN201124678Y Convenient compasses |
| 10/01/2008 | CN101274574A Inter-attractive combined stationery |
| 09/2008 | |
| 09/17/2008 | CN101264712A Radius compasses with telescopic arm |
| 09/03/2008 | CN201109322Y Ink bottle |
| 08/2008 | |
| 08/27/2008 | CN201105591Y Magnetic eraser |
| 08/20/2008 | CN201102410Y Novel ruler |
| 08/13/2008 | CN201099108Y Magnetic blackboard brush |
| 08/06/2008 | CN201095246Y Magnetic absorbing fastener |
| 08/06/2008 | CN101234572A Educational compasses |
| 07/2008 | |
| 07/23/2008 | CN201089305Y Teaching calipers |
| 07/23/2008 | CN201089290Y Concave-bend brush with cap for white board marker |
| 07/16/2008 | CN201086560Y 黑板擦 Eraser |
| 07/16/2008 | CN201086550Y Educational compasses |
| 07/16/2008 | CN201086549Y Convenient and safe compass for teaching use |
| 07/09/2008 | CN201082642Y Multifunctional set square |
| 07/09/2008 | CN201082641Y Teaching compasses |
| 07/02/2008 | CN201080083Y Sucker type compasses |
| 07/02/2008 | CN201080082Y Magnetic blackboard compasses |
| 07/02/2008 | CN100398338C Handheld layout and marking tool |
| 06/2008 | |
| 06/25/2008 | CN201077287Y Attracted blackboard diagraph ruler |
| 06/25/2008 | CN201077282Y Compasses with measuring scale |
| 06/11/2008 | CN201070930Y Circular curve-drawing instrument for blackboard |
| 06/04/2008 | CN101190632A Compass |
| 05/2008 | |
| 05/28/2008 | CN201065017Y Blackboard eraser with magnet |
| 05/28/2008 | CN201065009Y Blackboard ruler with magnet |
| 05/21/2008 | CN201061959Y Suction-disc type circle drawer |
| 05/21/2008 | CN201061958Y Sucker calipers |
| 04/2008 | |
| 04/16/2008 | CN201046642Y Antiskid ruler plate |
| 04/16/2008 | CN101161472A Sucking disc circular curve-drawing instrument |
| 03/2008 | |
| 03/19/2008 | CN201036953Y Magnetic multifunctional triangle convenient used for blackboard |
| 02/2008 | |
| 02/27/2008 | CN201026755Y Multi-functional ruler |
| 02/13/2008 | CN201021032Y Blackboard eraser for teaching |
| 02/13/2008 | CN201021020Y Teaching ruler |
| 02/06/2008 | CN201015934Y Electric compasses |
| 02/06/2008 | CN201015933Y Automatic compasses |
| 01/2008 | |
| 01/30/2008 | CN201012595Y Multifunctional ruler |
| 01/30/2008 | CN201012594Y White board compasses |
| 01/30/2008 | CN201012593Y Compasses having a sucking disc |
| 01/23/2008 | CN201009617Y Inter-attracted combined stationery |
| 01/23/2008 | CN201009602Y Magnetic iron rubber |
| 01/23/2008 | CN201009601Y Multi-function rubber |
| 01/23/2008 | CN201009599Y Folding teaching ruler |
| 01/23/2008 | CN201009595Y Novel compasses ruler |
| 01/23/2008 | CN201009594Y Compasses for blackboard |
| 01/23/2008 | CN201009588Y Anti-skid fixing ruler |
| 01/16/2008 | CN201006667Y Compasses |
| 01/09/2008 | CN201002457Y Magnetic blackboard eraser |
| 01/09/2008 | CN201002454Y Positioning set square |
| 01/02/2008 | CN200998966Y Spherical surface calipers |
| 12/2007 | |
| 12/27/2007 | DE19926737B4 Lineal Ruler |
| 12/19/2007 | CN200992081Y Magnetic rubber |
| 12/19/2007 | CN200992077Y Teaching compasses |
| 12/12/2007 | CN200988373Y Multifunction lamp box band writing plate |
| 11/2007 | |
| 11/28/2007 | CN200981427Y 圆规 Compasses |
| 11/21/2007 | CN200977808Y Compass with sucker |
| 11/21/2007 | CN200977807Y Multifunctional compasses for blackboard |
| 11/07/2007 | CN200970973Y Teaching compasses |
| 11/07/2007 | CN200970969Y Multipurpose ruler |