B43L 21 - Blackboard or slate-cleaning devices

Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409)
08/2011
08/31/2011	CN201951063U 带黑板擦的黑板 Blackboard with eraser
08/31/2011	CN201951060U 一种新型书写板 A new writing board
08/31/2011	CN102166906A Dust-collection type blackboard eraser
08/24/2011	CN201941461U 伸缩式黑板擦 Retractable eraser
08/24/2011	CN201941460U 一种防尘黑板擦 One kind of eraser dust
08/24/2011	CN201941459U 一种防尘黑板擦 One kind of eraser dust
08/24/2011	CN201941458U 电动吸尘黑板擦 Electric vacuum eraser
08/24/2011	CN201941457U 防尘黑板擦 Dust eraser
08/24/2011	CN201941456U 吸尘黑板擦 Vacuum eraser
08/24/2011	CN201941455U 双向驱动带式传动自吸式电动黑板擦 Bidirectional drive belt drive self-priming electric eraser
08/24/2011	CN201941454U 防尘式板擦 Eraser dust-proof
08/24/2011	CN201941453U 带有粉笔盒的黑板擦 Blackboard with chalk box rub
08/24/2011	CN201941452U 一种粉笔擦 One kind of rubbing chalk
08/24/2011	CN201941451U 一种电动黑板擦 An electric eraser
08/24/2011	CN201941450U 方便黑板擦 Convenient eraser
08/24/2011	CN201941449U 一种带有加长柄的黑板刷 A blackboard with a plus long-handled brush
08/24/2011	CN201941448U 一种方便黑板擦 A convenient eraser
08/24/2011	CN201941395U 滚动式自净黑板 Rolling purification blackboard
08/24/2011	CN201941394U 一种可移动集灰黑板 Removable, gray plate collector
08/24/2011	CN201941393U 一种黑板 One kind of blackboard
08/24/2011	CN201941391U 自带板擦的便携式黑板 Comes with a portable blackboard eraser
08/24/2011	CN201941387U 可循环自动清洗黑板装置 Automatic cleaning blackboard device can be recycled
08/24/2011	CN102161289A Novel blackboard eraser
08/17/2011	CN201931886U 一种带凸面镜的毡、毛黑板擦 A convex mirror with felt, wool eraser
08/17/2011	CN201931885U 一种吸尘黑板擦 One kind of eraser dust
08/17/2011	CN201931884U 防尘黑板擦 Dust eraser
08/17/2011	CN201931883U 吸尘黑板擦 Vacuum eraser
08/17/2011	CN201931882U 黑板擦 Eraser
08/17/2011	CN201931881U 一种吸尘黑板擦 One kind of eraser dust
08/17/2011	CN201931880U 一种多功能黑板擦 A multifunctional eraser
08/17/2011	CN201931879U 一种黑板擦 One kind of eraser
08/17/2011	CN201931878U 可自动弹灰的黑板擦 Automatic bomb gray eraser
08/17/2011	CN201931877U 自动黑板刷 Auto blackboard brush
08/17/2011	CN201931876U 多功能黑板擦 Multifunction eraser
08/17/2011	CN201931875U 长黑板刷 Long blackboard brush
08/17/2011	CN201931846U 一种便携的立式黑板 A portable vertical blackboard
08/17/2011	CN201931845U 一种自动除尘黑板 An automatic dust blackboard
08/17/2011	CN201931844U 集尘黑板 Dust blackboard
08/17/2011	CN201931841U 一种电动多功能黑板 An electric multifunction blackboard
08/17/2011	CN201931839U 黑板用粉尘盒 Blackboard with dust box
08/17/2011	CN201929894U 吸附式抹布 Adsorption rag
08/17/2011	CN102152697A Whiteboard eraser
08/10/2011	CN201922804U 旋转式自动黑板清洁装置 Rotary automatic blackboard cleaning device
08/10/2011	CN201922803U 湿润旋转式黑板擦 Wet rotary eraser
08/10/2011	CN201922802U 一种吸尘板擦 One kind of eraser dust
08/10/2011	CN201922801U 吸尘黑板擦 Vacuum eraser
08/10/2011	CN201922800U 一种粉笔擦 One kind of rubbing chalk
08/10/2011	CN201922799U 吸尘板擦 Vacuum Eraser
08/10/2011	CN201922798U 粉笔灰盛放袋 Chalk bag full bloom
08/10/2011	CN201922797U 教学用电动吸尘板擦 Teaching with an electric vacuum eraser
08/10/2011	CN201922796U 一种可收集粉笔灰的擦黑板工具 One kind of tool can collect chalk effaceurs
08/10/2011	CN201922795U 一种黑板刷 One kind of blackboard brush
08/10/2011	CN201922794U 防粉尘飞扬的板擦 Dust flying eraser
08/10/2011	CN201922793U 黑板擦 Eraser
08/10/2011	CN201922792U 一种黑板刷 One kind of blackboard brush
08/10/2011	CN201922757U 一种自动吸尘黑板 An automatic cleaning the blackboard
08/10/2011	CN201922756U 自擦除环保黑板 Self-erasing green blackboard
08/10/2011	CN102145622A Blackboard
08/10/2011	CN102145621A Clean-free unreflective blackboard
08/03/2011	CN201913981U 一种黑板擦脱尘器 One kind of eraser dust-control
08/03/2011	CN201913980U 黑板擦试机 Blackboard smear machine
08/03/2011	CN201913979U 一种无尘黑板擦 One kind of clean eraser
08/03/2011	CN201913978U 一种吸尘黑板擦 One kind of eraser dust
08/03/2011	CN201913977U 一种吸尘黑板擦 One kind of eraser dust
08/03/2011	CN201913976U 一种吸尘黑板擦 One kind of eraser dust
08/03/2011	CN201913975U 带凸面镜的双面黑板擦 Wipe with a convex-sided blackboard
08/03/2011	CN201913974U 带凸面镜的黑板擦 Wipe the blackboard with a convex mirror
08/03/2011	CN201913973U 一种旋转黑板擦 A rotating eraser
08/03/2011	CN201913972U 一种黑板刷 One kind of blackboard brush
08/03/2011	CN201913971U 一种可盛装粉笔的黑板擦 One kind can be dressed chalk eraser
07/2011
07/28/2011	WO2011091149A1 Whiteboard eraser
07/27/2011	CN201907339U Glove type blackboard eraser
07/27/2011	CN201907338U Cordless dust absorption eraser convenient for dust cleaning
07/27/2011	CN201907337U Multifunctional blackboard eraser
07/27/2011	CN201907321U Novel blackboard
07/20/2011	CN201900910U Telescopic arm blackboard eraser
07/20/2011	CN201900909U Novel blackboard eraser
07/20/2011	CN201900908U Electric dustproof blackboard eraser
07/20/2011	CN201900907U Dust absorption blackboard eraser
07/20/2011	CN201900906U Blackboard eraser capable of preventing hands from being dirty
07/20/2011	CN201900905U Fast blackboard eraser
07/20/2011	CN102126388A Eraser capable of automatically collecting dust
07/20/2011	CN102126387A Assembled type electric blackboard eraser
07/20/2011	CN102126382A Writing cloth for teaching
07/20/2011	CN102126381A Electronic dustless blackboard
07/20/2011	CN101628518B Multifunctional synthetic flexible blackboard
07/13/2011	CN201895512U Dust-absorbing blackboard eraser
07/13/2011	CN201895502U Chalk writing device convenient to clean
07/13/2011	CN201895500U Blackboard
07/13/2011	CN201895499U Novel blackboard
07/13/2011	CN102120397A Blackboard
07/07/2011	US20110162163 Apparatus Erasing Blackboard through Areas
07/06/2011	CN201890053U Full-automatic dust collector type blackboard eraser
07/06/2011	CN201890052U Blackboard eraser
07/06/2011	CN201890051U Dustproof blackboard eraser
07/06/2011	CN201890050U Novel board eraser
07/06/2011	CN201890049U Improved blackboard eraser
07/06/2011	CN201890033U Blackboard erasing device
07/06/2011	CN201890032U Blackboard
07/06/2011	CN102114745A Method for manufacturing automatic blackboard eraser

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