B43L 21 - Blackboard or slate-cleaning devices

Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409)
12/2011
12/21/2011	CN202080014U 带伸缩功能的黑板擦 Blackboard with telescopic function rub
12/21/2011	CN202080013U 折叠黑板擦 Folding eraser
12/21/2011	CN202080012U 吸尘黑板擦 Eraser dust
12/21/2011	CN202080011U 手套粉笔擦 Gloves rub chalk
12/21/2011	CN202079992U 一种黑板 One kind of blackboard
12/21/2011	CN202079991U 卷轴式防尘黑板 Reel-dust blackboard
12/14/2011	CN202071594U 新型黑板擦 The new eraser
12/14/2011	CN202071593U 吸尘黑板擦 Eraser dust
12/14/2011	CN202071592U 半自动吸尘黑板擦装置 Semi-automatic vacuum eraser device
12/14/2011	CN202071591U 全自动黑板擦 Automatic eraser
12/14/2011	CN102275432A 省力黑板擦 Effort eraser
12/14/2011	CN102275431A 一种黑板擦 One kind of eraser
12/14/2011	CN102275426A 一种黑板结构 One kind of blackboard structure
12/07/2011	CN202062917U 一种电动吸尘黑板擦 An electric vacuum blackboard eraser
12/07/2011	CN202062916U 吸附性黑板擦 Adsorption eraser
12/07/2011	CN202062915U 吸尘式黑板擦 Vacuum-type eraser
12/07/2011	CN202062914U 一种拆卸式粉笔收尘器 One kind of removable chalk dust collector
12/07/2011	CN202062913U 吸尘黑板擦 Eraser dust
12/07/2011	CN202062912U 一种洁净用黑板擦 Use a clean eraser
12/07/2011	CN202062911U 一种简易手动控制擦黑板装置 A simple manual control effaceurs device
12/07/2011	CN202062910U 一种黑板擦 One kind of eraser
12/07/2011	CN202062891U 一种自动控制的电动黑板 An automatic control of the electric blackboard
12/07/2011	CN202062890U 一种黑板 One kind of blackboard
12/07/2011	CN202062889U 粉笔灰清理盒 Cleanup chalk box
12/07/2011	CN202062888U 一种自动清洁黑板 An automatic cleaning blackboard
12/07/2011	CN102267322A 一种静电吸附式去除粉笔灰的黑板擦装置 An electrostatic adsorption device to remove chalk eraser
12/07/2011	CN102267321A 可伸缩黑板擦 Scalable eraser
12/07/2011	CN102267318A 滚筒黑板 Roller blackboard
11/2011
11/30/2011	CN202053806U 无尘黑板擦 Clean eraser
11/30/2011	CN202053805U 吸尘式板擦 Vacuum-type eraser
11/30/2011	CN202053804U 镶嵌式防尘黑板擦 Mosaic eraser dust
11/30/2011	CN202053803U 一种黑板擦 One kind of eraser
11/30/2011	CN202053802U 一种黑板擦 One kind of eraser
11/30/2011	CN202053801U 去除静电的黑板擦 Eraser to remove static electricity
11/30/2011	CN202053800U 便捷擦黑板器 Effaceurs convenient device
11/30/2011	CN202053787U 滚轮式全自动黑板 Automatic roller blackboard
11/23/2011	CN202046116U Telescopic blackboard eraser
11/23/2011	CN202046115U Blackboard eraser capable of increasing erasing area
11/23/2011	CN202046114U Dust collection blackboard eraser
11/23/2011	CN202046113U Waterborne blackboard eraser
11/23/2011	CN202046112U Blackboard eraser with environmental protection function
11/23/2011	CN202046111U Wet type dustproof blackboard eraser
11/23/2011	CN202046110U Automatic dustless blackboard eraser
11/23/2011	CN202046109U Blackboard eraser
11/23/2011	CN202046082U Blackboard with eraser
11/23/2011	CN202046080U Writing board
11/23/2011	CN202046050U Chalk sleeve capable of being used as blackboard eraser
11/16/2011	CN202038079U Dust suction blackboard eraser
11/16/2011	CN202038078U Automatic dust wiping and suction device of switching blackboard
11/16/2011	CN202038077U Multifunctional blackboard eraser
11/16/2011	CN202038076U Telescopic blackboard eraser
11/16/2011	CN202038075U Dedusting blackboard eraser
11/16/2011	CN202038074U Dustproof backboard eraser
11/16/2011	CN202038073U Detachable and washable blackboard eraser
11/16/2011	CN202038072U Blackboard brush
11/16/2011	CN202038071U Split type blackboard eraser
11/16/2011	CN202038054U Novel blackboard
11/16/2011	CN202038053U Disc type rotary blackboard
11/16/2011	CN202038052U Electrical-heating steam-type dust-proof blackboard for teaching
11/16/2011	CN202038051U Blackboard with blackboard eraser
11/16/2011	CN102241224A Dust absorption blackboard eraser
11/16/2011	CN102241223A Dust collection blackboard groove
11/16/2011	CN102241222A Blackboard eraser for removing dust
11/16/2011	CN102241221A Chalk dust absorber
11/16/2011	CN102241220A 自动黑板擦 Automatic eraser
11/16/2011	CN102241219A 磁力黑板系统 Magnetic blackboard system
11/09/2011	CN202029600U Electric dust absorption chalkboard eraser
11/09/2011	CN202029599U Dust-absorbing blackboard eraser
11/09/2011	CN202029598U Water-spray blackboard eraser
11/09/2011	CN202029597U Dust suction blackboard eraser
11/09/2011	CN202029596U Dust-sucking blackboard eraser
11/09/2011	CN202029595U Blackboard eraser easy to clean
11/09/2011	CN202029594U Rotary blackboard eraser
11/09/2011	CN202029575U Novel blackboard
11/02/2011	CN202022022U Adjustable blackboard eraser
11/02/2011	CN202022021U Electric blackboard brush
11/02/2011	CN202022020U Automatic dustproof blackboard eraser
11/02/2011	CN202022019U Blackboard eraser with water
11/02/2011	CN202022018U Automatic cleaning machine for blackboard
11/02/2011	CN202022017U A blackboard eraser
11/02/2011	CN202022016U Novel blackboard eraser
11/02/2011	CN202022015U Novel blackboard brush
11/02/2011	CN202022014U Blackboard eraser with pulley
11/02/2011	CN202022013U Multifunctional blackboard eraser
11/02/2011	CN202021999U Convenient-to-wipe blackboard
11/02/2011	CN202021998U Flushable blackboard
11/02/2011	CN202021996U Automatic change dustless blackboard
11/02/2011	CN102229301A Power-driven blackboard
10/2011
10/26/2011	CN202016342U Dust-absorption chalk eraser
10/26/2011	CN202016341U Blackboard eraser
10/26/2011	CN202016340U Blackboard eraser with novel structure for teachers
10/26/2011	CN202016319U Dust-proof blackboard with automatic clearing function
10/26/2011	CN102225675A Multifunctional electric self-cleaning teaching blackboard
10/19/2011	CN202011284U Dust suction blackboard eraser
10/19/2011	CN202011283U Sanitary dust absorption chalkboard eraser
10/19/2011	CN202011282U Dust-absorbing blackboard eraser
10/19/2011	CN202011281U 多功能黑板擦 Multifunction eraser
10/19/2011	CN202011280U Dust-free blackboard eraser
10/19/2011	CN202011279U 滚轴黑板擦 Roller eraser
10/19/2011	CN202011278U Dual purpose convenient blackboard eraser capable of turning over

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