Patents
Sitemap › B43 - Writing or drawing implements; Bureau accessories › B43L - Articles for writing or drawing upon; Accessories for writing or drawing › B43L 21 - Blackboard or slate-cleaning devices
Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409)
05/2010
05/26/2010CN201484003U Electric blackboard eraser
05/26/2010CN201484002U Multipurpose blackboard eraser
05/26/2010CN201484001U Convenient blackboard eraser
05/26/2010CN201484000U Roller skidding blackboard eraser
05/26/2010CN201483999U Blackboard eraser
05/26/2010CN201483979U Novel electric blackboard
05/19/2010CN201471986U Scrubbing brush plug-in handle for pupils
05/19/2010CN201471985U self-erasing and self-absorbing blackboard eraser
05/19/2010CN201471984U convenient blackboard eraser
05/19/2010CN201471983U Blackboard eraser capable of collecting chalk dust
05/19/2010CN201471982U Blackboard eraser device for water soluble chalk
05/19/2010CN201471981U Blackboard eraser
05/19/2010CN201471980U Blackboard eraser with handle
05/19/2010CN101708675A Dustproof blackboard brush
05/19/2010CN101708674A Blackboard eraser
05/12/2010CN201456831U Blackboard eraser clutch
05/12/2010CN201456830U Dust absorption-type wiping brush
05/12/2010CN201456829U Chalk brush
05/12/2010CN201456828U Environmental-friendly, energy-saving and dust-removing blackboard eraser
05/12/2010CN201456827U Dust-absorption blackboard eraser
05/12/2010CN201456826U Multifunctional foldable blackboard eraser
05/12/2010CN201456825U Dustless chalk eraser
05/12/2010CN201456824U Electric dust-suction blackboard eraser
05/12/2010CN201456823U Dedusting blackboard eraser
05/12/2010CN201456822U Dust-absorption blackboard eraser
05/12/2010CN201456821U blackboard eraser
05/12/2010CN201456820U Dustless blackboard eraser
05/12/2010CN201456819U Blackboard eraser with miniature dust collector
05/12/2010CN201456818U Blackboard eraser
05/12/2010CN201456817U Dust-sucking plant for blackboard eraser
05/12/2010CN201456816U Novel blackboard eraser
05/12/2010CN201456815U Dustproof blackboard eraser
05/12/2010CN201456814U blackboard eraser
05/12/2010CN201456813U Dust-absorption blackboard eraser
05/12/2010CN201456812U Dust absorbing eraser
05/12/2010CN201456811U Automatic blackboard eraser
05/12/2010CN201456810U Fully-automatic blackboard eraser
05/12/2010CN201456809U Double-body blackboard eraser
05/12/2010CN201456808U Electric blackboard eraser
05/12/2010CN201456807U Blackboard brush with telescopic handle
05/12/2010CN201456806U Structure for erasing blackboard
05/12/2010CN201456805U Blackboard eraser with chalk installing case
05/12/2010CN201456804U Multifunctional blackboard brush
05/12/2010CN201456803U Automatic blackboard eraser
05/12/2010CN201456802U multifunctional blackboard eraser
05/12/2010CN201456801U Simple and convenient blackboard eraser
05/12/2010CN201456756U Rolling blackboard easily cleaned
05/12/2010CN201456755U Dustless automatic-lift blackboard machine
05/12/2010CN201456752U 黑板 Blackboard
05/12/2010CN201456751U Blackboard with movable blackboard-eraser
05/12/2010CN201451493U Special glove for teachers
05/05/2010CN201446815U Double-reel dustless antifouling blackboard eraser
05/05/2010CN201446814U Blackboard eraser
05/05/2010CN201446813U Blackboard eraser convenient to hold
05/05/2010CN201446803U Multicolor magnetic drawing board
04/2010
04/28/2010CN201442461U Novel blackboard eraser
04/28/2010CN201441200U White board water cup
04/21/2010CN201439276U Eraser dust collecting component
04/14/2010CN201437306U Electrostatic dust protection device
04/14/2010CN101693430A Blackboard with electric brush
04/07/2010CN201436214U Dust-absorbing blackboard eraser
03/2010
03/31/2010CN201432527Y Dust absorption blackboard eraser
03/31/2010CN201432526Y Absorption blackboard eraser
03/31/2010CN201432525Y Automatic blackboard eraser
03/31/2010CN201432516Y Recycling blackboard with chalk-handwriting water-solubility
03/31/2010CN201432515Y Electric dust-free blackboard
03/31/2010CN201432514Y Electric erasing type dust-free soft blackboard
03/31/2010CN201432513Y rotatable blackboard
03/31/2010CN201432512Y Blackboard easy to clean
03/31/2010CN201432510Y Erasable panel structure
03/31/2010CN201432509Y Multi-functional magnetic drawing board
03/31/2010CN201432507Y Colorful magnetic drawing board with magnetic pen and seals
03/25/2010CA2670663A1 Eraser and marker holder for white boards
03/24/2010CN201427476Y Blackboard cloth chalk ash cleaner
03/24/2010CN201427475Y Eraser
03/24/2010CN201427474Y Blackboard eraser device for biochemical chalk
03/17/2010CN201423850Y Dry and wet dual-purpose blackboard eraser
03/17/2010CN201423849Y blackboard eraser
03/17/2010CN201423848Y Electric blackboard eraser
03/17/2010CN201423847Y double-sided blackboard eraser
03/17/2010CN201423840Y Blackboard with movable chalk tray groove
03/17/2010CN101670737A White board eraser with water
03/10/2010CN201419600Y Blackboard eraser capable of collecting chalk dusts
03/10/2010CN201419599Y Electric dust absorption blackboard cleaning device
03/10/2010CN201419598Y Dust absorption blackboard brush
03/10/2010CN201419597Y Blackboard eraser with dust containing box
03/10/2010CN201419596Y Manual dust-removing blackboard eraser
03/10/2010CN201419595Y blackboard eraser
03/10/2010CN201419585Y Blackboard
03/03/2010CN201415572Y Dust-absorbing blackboard
03/03/2010CN201415571Y Blackboard brush
03/03/2010CN201415570Y Blackboard mop
03/03/2010CN201415563Y Movable teaching board
03/03/2010CN201415196Y Wiper convenient for cleaning
02/2010
02/24/2010CN201410836Y Dust absorbing blackboard eraser
02/24/2010CN201410827Y Sanitary blackboard
02/17/2010CN201405646Y Water absorbing box of automatic blackboard eraser
02/17/2010CN201405645Y dedusting blackboard eraser
02/17/2010CN201405644Y Eraser with dust collecting function
02/17/2010CN201405643Y Dust-absorbing blackboard eraser
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