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)
12/2014
12/17/2014CN204020341U 一种防冻手便携式板擦 One kind of antifreeze hand portable eraser
12/17/2014CN204020334U 一种语文教学用划线装置 A language teaching scribing device
12/17/2014CN204020324U 多功能教学圆规 Multifunctional compasses
12/17/2014CN204020320U 多功能黑板 Multifunction blackboard
12/17/2014CN204020319U 一种拉动式擦-板一体式黑板 Pull one kind of rub - board integrated blackboard
12/17/2014CN204020315U 一种黑板辅助装置 One kind of blackboard assist device
12/17/2014CN204020314U 自带电动板擦的黑板 Comes with electric blackboard eraser
12/17/2014CN103171341B 自转滚轮式吸尘黑板擦 Rotation roller eraser dust
12/10/2014CN203995357U 板擦 Eraser
12/10/2014CN203995356U 吸尘黑板擦 Eraser dust
12/10/2014CN203995355U 新型电动黑板 New electric blackboard
12/10/2014CN203995354U 一种带有擦除装置的黑板 Erasing the blackboard with a device
12/10/2014CN203995353U 一种多功能黑板擦 A multifunctional eraser
12/10/2014CN203995352U 一种节能环保型板擦 An energy-saving environmental protection eraser
12/10/2014CN203995351U 语文教学可清洗黑板装置 Language teaching washable blackboard system
12/10/2014CN203995350U 隐式磁性黑板擦 Implicit magnetic eraser
12/10/2014CN203995349U 一种易擦拭黑板擦 An easily wipe eraser
12/10/2014CN203995348U 一种多用途黑板擦 A multipurpose eraser
12/10/2014CN203995347U 一种擦面不粘灰的经济黑板擦 Something to clean non-stick surface gray economy eraser
12/10/2014CN203995346U 自动黑板擦 Automatic eraser
12/10/2014CN203995345U 粉笔灰电控清理装置 Chalk electronically controlled cleaning device
12/10/2014CN203995305U 一种基于高温消失笔的旋转式自动擦除黑板 The disappearance of a high temperature rotary pen-based auto-erase board
12/10/2014CN203995304U 一种基于电子控制旋转式三棱柱智能黑板 Based electronically controlled rotary triangular prism intelligent blackboard
12/10/2014CN203995303U 带板擦的防尘黑板 Blackboard with eraser dust
12/10/2014CN203995301U 一种新型教学黑板 A new teaching blackboard
12/10/2014CN203995296U 一种环保型教学黑板 An eco-friendly teaching blackboard
12/10/2014CN203995293U 一种与投影布配合使用的自动除尘黑板 A projector with automatic dust cloth used blackboard
12/10/2014CN203995292U 一种不对称双层循环黑板 An asymmetric double loop blackboard
12/10/2014CN203995290U 带有长条板擦的黑板 With a long strip of blackboard eraser
12/10/2014CN203995285U 一种自擦便捷书写白板 A self-wipe whiteboard convenient
12/10/2014CN203995246U 一种国际经济与贸易教学用手掌杆 Teaching an international economic and trade with the palm rod
12/10/2014CN104191878A 一种太阳能半自动吸尘黑板擦 A solar semi-automatic vacuum eraser
12/10/2014CN104191877A 一种白板板刷 One kind of white scrubbing brush
12/10/2014CN104191869A 一种挂吊式多功能黑板 One kind of hanging blackboard hanging multifunction
12/10/2014CN104191867A 一种可移动手拉自清除式的多功能黑板 A movable multifunction self-clearing formula blackboard Hand
10/2014
10/14/2014US8857000 Dry board eraser system
08/2014
08/13/2014CN203766351U 一种吸尘黑板擦 One kind of eraser dust
08/13/2014CN203766350U 新型黑板擦 The new eraser
08/13/2014CN203766349U 一种回收粉笔粉尘的粉笔擦 A process for recovering rub chalk chalk dust
08/13/2014CN203766348U 一种黑板擦 One kind of eraser
08/13/2014CN203766347U 环保黑板擦 Environmental eraser
08/13/2014CN203766346U 一种防油墨白板擦 An anti-rub ink whiteboard
08/13/2014CN203766329U 高效擦拭电动双层黑板 Efficient electric double wipe the blackboard
08/13/2014CN203766328U 一种新型多功能数学教学黑板 A new multi-purpose blackboard teaching mathematics
08/13/2014CN203766326U 便携式语文教学黑板 Portable language teaching blackboard
08/13/2014CN103978817A 机械式吸尘黑板擦 Mechanical vacuum eraser
08/13/2014CN103978814A 一种新型黑板 A new blackboard
08/13/2014CN102390204B 一种转动式环保黑板擦 One kind of rotary green eraser
08/06/2014CN203752760U 一种黑板擦 One kind of eraser
08/06/2014CN203752759U 一种黑板粉笔灰除尘系统 One kind of blackboard chalk dust removal system
08/06/2014CN203752758U 一种电动无尘黑板擦 An electric eraser dust
08/06/2014CN203752757U 气囊吸尘黑板擦 Airbag dust eraser
08/06/2014CN203752756U 黑板清洁装置 Blackboard cleaning device
08/06/2014CN203752755U 一种粉笔擦除尘清洁器 One kind of chalk dust wipe cleaner
08/06/2014CN203752754U 速干无尘黑板擦 Sugan clean eraser
08/06/2014CN203752741U 一种正三棱柱翻转式黑板装置 A positive triangular prism flip blackboard system
08/06/2014CN203752738U 一种黑板 One kind of blackboard
08/06/2014CN203752737U 一种循环交替式免擦无尘黑板 A circular alternating-free wipe clean the blackboard
08/06/2014CN203752730U 一种粉笔头、粉笔末回收利用装置 A chalk, chalk recycling equipment
08/06/2014CN103963523A 带有擦板的黑板 Wipe board with blackboard
08/06/2014CN103963522A 一种自动黑板擦 An automatic eraser
08/06/2014CN103963521A 用于吸灰黑板擦的吸尘装置 The vacuum suction device for gray eraser
08/06/2014CN103963520A 电动吸灰黑板擦 Electric suction gray eraser
08/06/2014CN103963519A 电动喷水吸灰黑板擦 Electric water suction gray eraser
08/06/2014CN103963518A 一种湿、干同步擦净的除尘黑板擦 One kind of wet, dry eraser dust wipe synchronization
07/2014
07/30/2014CN203739508U 一种黑板擦 One kind of eraser
07/30/2014CN203739507U 清洗黑板装置 Cleaning blackboard system
07/30/2014CN203739506U 设有除尘及空调功能的讲台 Dust and air conditioning has a podium function
07/30/2014CN203739505U 主动吸尘智能黑板 Active Vacuum smart blackboard
07/30/2014CN203739504U 多功能黑板擦 Multifunction eraser
07/30/2014CN203739503U 悬挂式黑板擦 Hanging eraser
07/30/2014CN203739502U 一种黑板擦 One kind of eraser
07/30/2014CN203739477U 一种便携式多功能黑板 A portable multi-purpose blackboard
07/30/2014CN203739476U 一种移动式手摇升降黑板 A portable hand movements blackboard
07/30/2014CN203739475U 一种带鱼缸的黑板 A blackboard with aquarium
07/30/2014CN203739474U 教学使用的自动擦字除尘圆盘形电动机械式黑板 Teaching the use of the word automatic wiping dust disc-shaped electro-mechanical blackboard
07/30/2014CN203739473U 一种防尘旋转式组合黑板 One kind of dust rotary combination blackboard
07/30/2014CN203739472U 一种三面翻黑板 A three sides over the blackboard
07/30/2014CN103950330A 伸缩式黑板擦 Retractable eraser
07/30/2014CN103950329A 电动黑板擦装置 Electric eraser device
07/30/2014CN103950323A 带有自动黑板擦的黑板 With automatic blackboard eraser
07/30/2014CN103950322A 带有电动擦板的黑板 Blackboard with electric graters
07/30/2014CN103950321A 自动黑板控制装置 Automatic blackboard control device
07/30/2014CN103950320A 一种滚动式白板 A rolling whiteboard
07/23/2014CN203727069U 一种可充电式吸尘鼠标黑板擦 One kind of rechargeable eraser dust Mouse
07/23/2014CN203727068U 集尘黑板刷 Blackboard brush dust
07/23/2014CN203727067U 擦黑板装置 Effaceurs device
07/16/2014CN203713367U 一种防尘电动黑板擦 One kind of electric eraser dust
07/16/2014CN203713366U 粉笔灰槽自动清理装置 Chalk trough automatic cleaning device
07/16/2014CN203713365U 电控式粉笔灰槽扫灰装置 Electronically controlled device chalk gray tank sweep
07/16/2014CN203713364U 黑板清洁铲 Blackboard clean shovel
07/16/2014CN203713363U 粉笔灰槽清理装置 Chalk tank cleaning device
07/16/2014CN203713362U 能自动扫灰的粉笔灰槽清理结构 Chalk tank cleanup structure can automatically sweep ash
07/16/2014CN203713361U 快速清洁式粉笔灰槽 Fast-cleaning chalk groove
07/16/2014CN203713360U 自动清理粉笔灰的装置 Automatic cleaning device chalk
07/16/2014CN203713359U 便捷式粉笔灰清理装置 Portable chalk cleaning device
07/16/2014CN203713358U 手持式粉笔灰槽快速清洁装置 Handheld chalk groove quick cleaning device
07/16/2014CN203713357U 粉笔灰槽电控扫灰装置 Chalk trough electronic control device to sweep the ash
07/16/2014CN203713356U 手持便捷式粉笔灰槽清理装置 Handheld convenient-style chalk dust groove clean-up apparatus of
07/16/2014CN203713355U 粉笔灰扫灰结构 Chalk sweep gray structure
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