B43L 21 - Blackboard or slate-cleaning devices

Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409)
05/2013
05/15/2013	CN202935050U Novel dustproof blackboard eraser
05/15/2013	CN202935049U Dust absorption blackboard eraser
05/15/2013	CN202935048U Dustproof blackboard eraser
05/15/2013	CN202935047U Novel white board eraser
05/15/2013	CN202935046U Hand protection type blackboard eraser
05/15/2013	CN202935045U Foldable blackboard eraser
05/15/2013	CN202935044U Blackboard eraser without staining sleeve
05/15/2013	CN202935043U Portable blackboard eraser
05/15/2013	CN202935018U Anti-pollution clean blackboard
05/15/2013	CN202935014U Embedded chalk rail of writing board
05/15/2013	CN103101373A 黑板擦 Eraser
05/08/2013	CN202923236U Safety blackboard eraser
05/08/2013	CN202923235U Environmental-friendly wiper convenient to wash
05/08/2013	CN202923234U Blackboard groove convenient to clean
05/08/2013	CN202923215U Dust-free magnetic blackboard
05/08/2013	CN103085551A Vacuum cleaner sweeping blackboard
05/08/2013	CN103085550A Novel blackboard eraser
05/08/2013	CN103085549A Labor-saving blackboard eraser
05/01/2013	CN202911408U Static electricity dust removal blackboard eraser
05/01/2013	CN202911407U Dust-absorption chalk brush
05/01/2013	CN202911406U Ash-absorbing blackboard eraser
05/01/2013	CN202911405U Ash-absorbing type blackboard eraser
05/01/2013	CN202911404U Traceless board eraser
05/01/2013	CN202911403U Dustproof blackboard eraser
05/01/2013	CN202911402U Blackboard eraser capable of cleaning blackboard
05/01/2013	CN202911401U Waterproof and cold-proof blackboard eraser
05/01/2013	CN202911377U Novel blackboard
05/01/2013	CN202911376U Blackboard capable of removing chalk powder easily
05/01/2013	CN103072413A Roller eraser
05/01/2013	CN103072412A Replaceable blackboard eraser
04/2013
04/24/2013	CN202896097U Dust-removing blackboard eraser
04/24/2013	CN202896096U Blackboard eraser with dust-absorbing function
04/24/2013	CN202896095U Chalk-regenerating blackboard eraser
04/24/2013	CN202896094U Automatic dedusting blackboard eraser
04/24/2013	CN202896093U Multifunctional blackboard eraser with detachable sponge eraser
04/24/2013	CN202896092U Multi-function blackboard brush
04/24/2013	CN202896091U Whiteboard brush
04/24/2013	CN202896090U Blackboard eraser
04/24/2013	CN202896089U Dust-free blackboard eraser
04/24/2013	CN202896088U Glove-type blackboard eraser
04/24/2013	CN202896087U Electric remote control blackboard eraser
04/24/2013	CN202896086U Dumbbell-shaped blackboard eraser
04/24/2013	CN202896085U Suspension type blackboard eraser
04/24/2013	CN202896084U Glove-type blackboard eraser
04/24/2013	CN202896083U White board eraser with scanner
04/24/2013	CN202896082U Portable blackboard eraser
04/24/2013	CN202896081U Dust absorption blackboard eraser with detachable erasing head
04/24/2013	CN202896052U Multifunctional teaching blackboard
04/24/2013	CN103057323A Blackboard eraser
04/17/2013	CN202886827U Rolling-type writable self-erased projection screen applied to teaching
04/17/2013	CN202879071U Automatic blackboard eraser
04/17/2013	CN202879070U Novel blackboard eraser
04/17/2013	CN202879069U Contact type dust collection blackboard eraser
04/17/2013	CN202879068U Novel blackboard eraser
04/17/2013	CN202879067U Multi-functional eraser
04/17/2013	CN202879066U Board wiper with recording and dust-absorption functions
04/17/2013	CN202879065U Blackboard brush
04/17/2013	CN202879064U Blackboard eraser
04/17/2013	CN202879063U Blackboard eraser with chalk cover
04/17/2013	CN103042868A Multifunctional blackboard eraser
04/17/2013	CN103042864A Flexible blackboard device based on autorotation wiping
04/10/2013	CN202862952U Quick-cleaning blackboard
04/10/2013	CN202862951U Dust absorption blackboard eraser
04/10/2013	CN202862950U Electrostatic dust absorbing eraser
04/10/2013	CN202862949U Portable blackboard eraser
04/10/2013	CN202862948U Blackboard eraser
04/10/2013	CN103029492A Novel chalk clamp
04/03/2013	CN202847274U Novel pen container blackboard eraser
04/03/2013	CN202847263U Dustproof blackboard eraser
04/03/2013	CN202847262U Electric blackboard eraser
04/03/2013	CN202847261U Stretchable dry-and-wet blackboard eraser
04/03/2013	CN202847260U Multifunctional chalk eraser
04/03/2013	CN202847259U Practical novel mouse eraser
04/03/2013	CN202847234U Dust absorption blackboard
04/03/2013	CN202847232U Blackboard convenient to clean
04/03/2013	CN103009890A Dust collection blackboard eraser
04/03/2013	CN103009889A Blackboard eraser
03/2013
03/27/2013	CN202826900U Soft whiteboard brush
03/27/2013	CN202826899U Vacuum circulating type environment-protecting chalk erasure device
03/27/2013	CN202826898U Chalk dust recycling device
03/27/2013	CN202826897U Electrostatic dust absorption blackboard eraser
03/27/2013	CN202826896U Dustproof blackboard eraser
03/27/2013	CN202826895U Dust absorption blackboard eraser
03/27/2013	CN202826894U Blackboard eraser with fan
03/27/2013	CN202826893U Folding blackboard eraser
03/27/2013	CN202826892U Dustproof blackboard eraser
03/27/2013	CN202826891U Novel blackboard eraser
03/27/2013	CN202826890U Eraser abating raise dust
03/27/2013	CN202826889U Novel eraser
03/27/2013	CN202826888U Dual-purpose blackboard eraser
03/27/2013	CN202826872U Novel electric washed blackboard
03/27/2013	CN102991231A Blackboard eraser
03/27/2013	CN102991230A Magnetic blackboard eraser with chalk box
03/27/2013	CN102991229A Eraser device
03/27/2013	CN102991228A Blackboard eraser
03/27/2013	CN102991227A Blackboard eraser
03/27/2013	CN102991226A Blackboard eraser
03/27/2013	CN102229301B Power-driven blackboard
03/20/2013	CN202806100U Dust-free blackboard eraser
03/20/2013	CN202806099U Electromagnetic power blackboard eraser

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