B43L 21 - Blackboard or slate-cleaning devices

Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409)
10/2009
10/15/2009	DE202009008767U1 Reinigungsgerät für Tafel Cleaning equipment for table
10/14/2009	CN201325268Y Blackboard eraser with dust self-sucking structure
10/14/2009	CN201325267Y Novel blackboard eraser
10/14/2009	CN201325266Y Fast automatic blackboard eraser
10/14/2009	CN201325261Y Dual-purpose environmental protection blackboard
10/14/2009	CN101554816A Omnibearing fast blackboard eraser
10/14/2009	CN101554269A Multifunctional teaching desk with dust-suction blackboard eraser
10/07/2009	CN201320910Y Full-automatic dust-absorbing blackboard eraser capable of telescoping and lifting
10/07/2009	CN201320909Y Dustproof chalk cleaner
10/07/2009	CN201320908Y Full-automatic blackboard cleaning system
10/07/2009	CN101549604A Dustproof blackboard
09/2009
09/30/2009	CN201317216Y Retractable blackboard eraser
09/30/2009	CN201317215Y Novel blackboard eraser
09/30/2009	CN201317214Y Novel dust-absorbing blackboard eraser
09/30/2009	CN201317213Y Dust sucking blackboard eraser
09/30/2009	CN201317212Y Blackboard eraser
09/23/2009	CN201313466Y Dust removing blackboard eraser
09/23/2009	CN201313465Y Convenient chalk brush
09/23/2009	CN201313464Y Bar shaped electric blackboard eraser
09/23/2009	CN201313463Y Blackboard brush capable of soaking a little chalk dust
09/23/2009	CN201313462Y Blackboard eraser
09/23/2009	CN201313461Y Blackboard eraser with dust removing function
09/16/2009	CN201309351Y Special blackboard brush support for teachers and students
09/16/2009	CN201309350Y Dust-catching blackboard eraser
09/16/2009	CN201309349Y Dust absorbing blackboard eraser
09/09/2009	CN201304826Y Dust collection blackboard eraser
09/02/2009	CN201300637Y Automatic dust-absorbing blackboard eraser
09/02/2009	CN201300636Y Electric dust-absorbing blackboard eraser
09/02/2009	CN201300635Y Dust-absorption blackboard eraser
09/02/2009	CN201300634Y Novel vacuum cleaning blackboard eraser
09/02/2009	CN201300633Y Electric blackboard eraser
09/02/2009	CN201300632Y Energy-saving type dust reduction blackboard eraser
08/2009
08/26/2009	CN201296125Y Automatic dust-free blackboard eraser
08/26/2009	CN201296124Y Dustproof blackboard eraser sleeve
08/26/2009	CN201296123Y Blackboard eraser with article storage box
08/26/2009	CN201296114Y White board writing and drawing pen set
08/26/2009	CN101513809A Electric blackboard
08/19/2009	CN201291695Y Dustless eraser
08/19/2009	CN201291694Y Environment protection black board eraser
08/19/2009	CN201291693Y Multifunctional blackboard eraser
08/19/2009	CN201291678Y Novel blackboard
08/19/2009	CN201291677Y Novel blackboard
08/19/2009	CN101508220A Dust-free environmental protection type blackboard
08/12/2009	CN201287558Y Chalk dust absorbing blackboard eraser
08/12/2009	CN201287550Y Electric blackboard
08/12/2009	CN201287549Y Multifunctional environment friendly blackboard
08/05/2009	CN201283732Y Lift-type blackboard eraser
08/05/2009	CN201283731Y Dustless blackboard eraser
08/05/2009	CN201283726Y 多功能黑板 Multifunction blackboard
08/05/2009	CN201283723Y Rolling self-wiping teaching board
07/2009
07/29/2009	CN201280016Y Dustless blackboard
07/29/2009	CN201280015Y Absorbent blackboard eraser convenient to discharge dust
07/29/2009	CN201280014Y Multipurpose blackboard eraser
07/29/2009	CN201280013Y Eraser device for blackboard
07/29/2009	CN201280012Y Dust-eliminating eraser
07/22/2009	CN201275966Y Blackboard eraser
07/22/2009	CN201275965Y Automatic dust absorbing blackboard eraser
07/22/2009	CN201275964Y Absorbent blackboard eraser
07/22/2009	CN201275963Y Electric chalk-dust absorbing type blackboard eraser
07/22/2009	CN201275962Y Blackboard eraser with clock
07/22/2009	CN201275961Y Blackboard eraser with chalk
07/22/2009	CN201275960Y Multifunctional teaching aid
07/15/2009	CN201272168Y Multifunctional blackboard eraser
07/15/2009	CN201272167Y Dust free blackboard eraser
07/15/2009	CN201272166Y Chalk dust removing blackboard eraser
07/15/2009	CN201272165Y Blackboard eraser
07/15/2009	CN201272164Y Strip type blackboard eraser
07/15/2009	CN201272163Y Simple surface changing blackboard eraser
07/15/2009	CN201272162Y Blackboard eraser
07/01/2009	CN201264456Y 粉笔擦 Chalk rub
06/2009
06/24/2009	CN201261338Y 负压式黑板擦 Negative pressure eraser
06/24/2009	CN201261337Y Hand-protective blackboard eraser
06/17/2009	CN201257857Y Novel blackboard eraser without chalk dust
06/17/2009	CN101456325A Full-automatic blackboard brush
06/10/2009	CN201254033Y Dustless blackboard
06/10/2009	CN201254032Y Blackboard eraser
06/10/2009	CN101450574A Dust-absorption brush
06/10/2009	CN101450573A Dust-absorption brush
06/10/2009	CN101450572A Water-spraying brush
06/03/2009	CN201249614Y Blackboard eraser
05/2009
05/27/2009	CN201245019Y Telescopic two-sided blackboard eraser
05/27/2009	CN201245018Y Automatic dust-collection blackboard eraser
05/27/2009	CN201245017Y Polyurethane foam plastic blackboard eraser for teaching
05/27/2009	CN201245016Y Automatic blackboard erasing arrangement
05/27/2009	CN201245015Y Quick eraser
05/27/2009	CN201245004Y Automatic blackboard
05/27/2009	CN201245003Y Novel blackboard
05/27/2009	CN201245002Y Multifunctional blackboard
05/27/2009	CN101439638A Dustless electric cleaning type blackboard
05/21/2009	US20090126137 Layered Whiteboard Cleaning Tool and Method of Production
05/20/2009	CN201240185Y Electric chalk dust absorbing blackboard eraser
05/20/2009	CN201240184Y Strong chalk dust absorbing blackboard eraser
05/20/2009	CN201240183Y Automatic blackboard eraser
05/20/2009	CN101434164A Blackboard eraser
05/13/2009	CN201235691Y Electric blackboard eraser
05/13/2009	CN201235690Y Chalk eraser
05/13/2009	CN201235689Y Novel blackboard eraser
05/13/2009	CN201235688Y Dust-suction blackboard eraser
05/13/2009	CN201235687Y Blackboard eraser
05/13/2009	CN201235686Y Blackboard eraser

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