B43L 21 - Blackboard or slate-cleaning devices

Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409)
10/2013
10/02/2013	CN203221783U Quickly erased blackboard
10/02/2013	CN203221782U Novel blackboard
10/02/2013	CN103332048A Electric dust-collection blackboard eraser
10/02/2013	CN103332045A Dust-free blackboard
09/2013
09/25/2013	CN203210962U Manual blackboard cleaning device
09/25/2013	CN203210961U 多功能黑板擦 Multifunction eraser
09/25/2013	CN203210960U Rotating-roller type dust-collection eraser
09/25/2013	CN203210959U Blackboard eraser
09/25/2013	CN203210958U Multi-purpose whiteboard eraser
09/25/2013	CN103317919A Novel blackboard eraser
09/25/2013	CN103317918A Automatic dust removing and cleaning blackboard
09/25/2013	CN103317917A Multifunctional electronic blackboard eraser
09/18/2013	CN203198550U Blackboard eraser with holding rod
09/18/2013	CN203198549U Dust-absorbing blackboard brush
09/18/2013	CN203198548U Blackboard eraser
09/18/2013	CN203198547U Eraser capable of collecting dust effectively
09/18/2013	CN203198546U Dust-collecting type board wiper
09/18/2013	CN203198545U Electric blackboard eraser
09/18/2013	CN203198544U Blackboard eraser with ash collecting box
09/18/2013	CN203198543U Board eraser for reducing powder
09/18/2013	CN203198542U Eraser capable of being hung
09/18/2013	CN203198541U Dust-free eraser
09/18/2013	CN203198540U Dust-free eraser
09/18/2013	CN203198539U Two-sided blackboard eraser
09/18/2013	CN203198538U 黑板 Blackboard
09/18/2013	CN203198537U Idler wheel blackboard eraser
09/18/2013	CN203198536U Trapezoidal blackboard eraser
09/18/2013	CN203198535U Blackboard eraser
09/18/2013	CN203198534U Integrated blackboard eraser
09/18/2013	CN203198533U Multifunctional board eraser
09/18/2013	CN203198532U Rotary drum type blackboard eraser
09/18/2013	CN203198531U Rotary drum type magnetic blackboard eraser
09/18/2013	CN203198530U Dust-free blackboard eraser
09/18/2013	CN203198518U Teaching compasses
09/11/2013	CN203185943U Dustless blackboard brush
09/11/2013	CN203185942U Automatic blackboard erasing device
09/11/2013	CN203185941U Blackboard eraser with automatic dust collection function
09/11/2013	CN203185926U Novel negative-pressure environment-protection multifunctional blackboard
09/11/2013	CN203185921U Automatic eraser teaching aid
09/11/2013	CN103287176A Electrostatic dust-absorption blackboard eraser and electrostatic dust-absorption blackboard eraser manufacturing method
09/11/2013	CN103287175A Multi-functional blackboard eraser
09/04/2013	CN203172305U Blackboard eraser
09/04/2013	CN203172304U Device for automatically collecting blackboard dust
09/04/2013	CN203172303U Partitionable automatic blackboard eraser capable of dividing regions
09/04/2013	CN203172302U Rolling shaft blackboard eraser
09/04/2013	CN203172301U Rolling type blackboard eraser
09/04/2013	CN203172300U Multi-purpose board eraser
09/04/2013	CN203172299U Blackboard eraser for teaching
09/04/2013	CN203172298U Modified blackboard eraser
09/04/2013	CN203172297U Replaceable blackboard eraser
09/04/2013	CN203172296U 黑板擦 Eraser
09/04/2013	CN203172295U 可拆卸黑板擦 Removable eraser
09/04/2013	CN203172260U Blackboard with chalk eraser
09/04/2013	CN203172258U Blackboard
09/04/2013	CN103273771A 环保节能磁性黑板 Green energy magnetic blackboard
08/2013
08/28/2013	CN203157524U Sponge blackboard eraser
08/28/2013	CN203157523U Multifunctional blackboard eraser
08/28/2013	CN203157522U Dust collection blackboard eraser
08/28/2013	CN203157521U Reinforced type mechanical blackboard wiping machine
08/28/2013	CN203157520U Dust collection blackboard eraser
08/28/2013	CN203157519U Electrostatic-precipitation blackboard eraser
08/28/2013	CN203157518U Novel multifunctional blackboard eraser
08/28/2013	CN203157517U Novel magnetic blackboard eraser
08/28/2013	CN203157516U Blackboard eraser capable of spraying water for dust collection
08/28/2013	CN203157515U Dustproof blackboard eraser
08/28/2013	CN203157514U Automatic device for cleaning blackboard
08/28/2013	CN203157513U Double-function eraser
08/28/2013	CN203157512U Blackboard eraser
08/28/2013	CN203157511U Mechanical blackboard wiping machine
08/28/2013	CN203157510U Automatic blackboard cleaning device
08/28/2013	CN203157486U Novel blackboard device
08/28/2013	CN103264600A Dust collecting blackboard eraser
08/28/2013	CN103264599A Automatic blackboard eraser
08/21/2013	CN203142204U Novel blackboard eraser
08/21/2013	CN203142203U Dust-collecting blackboard eraser
08/21/2013	CN203142202U Full screen blackboard eraser
08/21/2013	CN203142201U Novel blackboard eraser
08/21/2013	CN203142200U Steam spraying chalk brush
08/21/2013	CN203142199U Blackboard eraser
08/21/2013	CN203142198U Dust-free blackboard eraser
08/21/2013	CN203142197U Dust-sucking blackboard eraser
08/21/2013	CN203142196U Automatic dust-fall-free environment-friendly type chalk eraser
08/21/2013	CN203142195U Novel automatically-cleaning blackboard
08/21/2013	CN203142194U Baffle-type blackboard eraser
08/21/2013	CN203142167U Batten type blackboard capable of overturning and being cleaned automatically
08/21/2013	CN203142165U Dust-free blackboard
08/21/2013	CN103253047A Novel electrostatic dust collection board wiper
08/21/2013	CN103253046A Wet-type and dust-free blackboard cleaner
08/21/2013	CN103253045A Blackboard
08/21/2013	CN103253041A Erasable blackboard capable of moving left and right
08/14/2013	CN203126306U Motor-driven blackboard eraser
08/14/2013	CN203126305U Glove blackboard eraser
08/14/2013	CN203126304U Blackboard
08/14/2013	CN203126303U Environment-protection telescopic blackboard eraser
08/14/2013	CN203126302U Dust-removing eraser
08/14/2013	CN203126301U Convenient blackboard eraser
08/14/2013	CN203126300U Blackboard dust collection system
08/14/2013	CN203126299U Mini-sized dust collector intelligent eraser
08/14/2013	CN203126298U Intelligent board wiper with blocking board
08/14/2013	CN203126297U Intelligent board eraser with voice prompting device

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