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)
07/2014
07/16/2014CN203713354U 粉笔灰槽自动扫灰收集装置 Automatic sweep gray chalk groove collection device
07/16/2014CN203713353U 电控式粉笔灰槽扫灰结构 Electronically controlled sweep gray chalk groove structure
07/16/2014CN203713352U 粉笔灰槽电控扫灰结构 Electronically controlled sweep gray chalk groove structure
07/16/2014CN203713351U 粉笔灰槽快捷清理装置 Chalk groove quick cleaning device
07/16/2014CN203713350U 手持式粉笔灰槽扫灰装置 Handheld devices chalk gray tank sweep
07/16/2014CN203713349U 粉笔灰电控清理结构 Chalk electronically controlled clean-up structure
07/16/2014CN203713348U 能自动扫灰的粉笔灰槽清理装置 Can automatically sweep gray chalk tank cleaning device
07/16/2014CN203713347U 粉笔灰槽自动扫灰装置 Chalk gray tank means automatic sweep
07/16/2014CN203713346U 电控式粉笔灰槽清理装置 Electronically controlled chalk tank cleaning device
07/16/2014CN203713345U 电控式粉笔灰槽清理结构 Electronically controlled chalk tank cleanup structure
07/16/2014CN203713344U 粉笔灰自动清理结构 Chalk automatic cleanup structure
07/16/2014CN203713322U 一种教育教学用黑板 An educational teaching blackboard
07/16/2014CN103921597A 一种黑板擦自动除灰装置 One kind of eraser automatic ash removal device
07/09/2014CN203697814U 触控自动吸尘多功能黑板擦 Touch automatic vacuuming versatility eraser
07/09/2014CN203697813U 减尘黑板擦 Less dust eraser
07/09/2014CN203697812U 一种用于英语教学的电动黑板擦 Electric blackboard rub for English teaching
07/09/2014CN203697811U 便携式黑板擦 Portable eraser
07/09/2014CN203697810U 一种可移动清洗黑板的装置 Removable, cleaning the blackboard device
07/09/2014CN203697809U 一种可伸缩黑板擦 A scalable eraser
07/09/2014CN203697771U 一种无尘黑板 One kind of clean blackboard
07/09/2014CN103909774A 一种新型快捷擦除的黑板 A new quick erasing the blackboard
07/02/2014CN203681104U 一种可连接教杆的黑板擦 Connecting rod can teach a blackboard wipe
07/02/2014CN203681103U 电动黑板擦 Electric eraser
07/02/2014CN203681102U 环保黑板擦 Environmental eraser
07/02/2014CN203681101U 一种除尘黑板擦 One kind of eraser dust
07/02/2014CN203681100U 一种电动喷雾黑板擦 An electric spray eraser
07/02/2014CN203681077U 一种能水洗风干及污水循环过滤的黑板 One kind can be washed and dried sewage loop filter blackboard
07/02/2014CN203681076U 一种静电除尘黑板 An electrostatic dust blackboard
07/02/2014CN203681072U 一种新型的经济学教学用展示板 A new economics teaching display boards
07/02/2014CN203681071U 一种多功能英文教学板 A versatile English teaching board
07/02/2014CN103895430A 一种可以防止粉尘四散的黑板擦 A way to prevent dust scattered eraser
07/02/2014CN103895429A 一种自擦式黑板装置 A self-erase board device
07/02/2014CN103895428A 无尘擦黑板器 Clean effaceurs device
07/02/2014CN103895427A 简易除尘黑板擦及其使用方法 Easy to use and eraser dust
07/02/2014CN103895426A 可以伸缩的黑板擦 Retractable eraser
07/02/2014CN103895425A 黑板清洁系统 Blackboard cleaning system
07/02/2014CN103895424A 黑板便捷清洁装置 Blackboard convenient cleaning device
06/2014
06/25/2014CN203666213U 一种防尘黑板擦 One kind of eraser dust
06/25/2014CN203666212U 便利黑板擦 Convenient eraser
06/25/2014CN203666211U 静电黑板檫 Electrostatic blackboard Sassafras
06/25/2014CN203666210U 全自动无尘黑板擦 Automatic clean eraser
06/25/2014CN203666209U 一种黑板擦 One kind of eraser
06/25/2014CN203666208U 防尘黑板擦 Dust eraser
06/25/2014CN203666207U 一种无死角自动清洁黑板 A non-automatic cleaning blackboard dead
06/25/2014CN203666206U 带式自动擦抹无尘黑板 Tape Automated wipe clean the blackboard
06/25/2014CN203666205U 一种高效黑板擦 An efficient eraser
06/25/2014CN203666204U 一种干湿两用黑板擦 One kind of wet and dry eraser
06/25/2014CN203666184U 一种自动擦除式黑板 An automatic erase blackboard
06/25/2014CN203666183U 多方位自动擦柔性黑板 Flexible multi-directional automatic wiping the blackboard
06/25/2014CN203666182U 方便大学高等数学绘图的教学黑板 Facilitate teaching university mathematics blackboard drawing
06/25/2014CN203666181U 便捷式黑板 Portable blackboard
06/25/2014CN203666180U 黑板接灰槽 Blackboard pick gray tank
06/25/2014CN103879208A 毛刷黑板擦 Brush eraser
06/18/2014CN203651289U 多功能自动黑板擦 Multifunctional Automatic eraser
06/18/2014CN203651288U 一种可替换式圆筒形黑板擦 An alternative type cylindrical eraser
06/18/2014CN203651270U 多功能自动化无尘黑板 Multifunctional automated clean the blackboard
06/18/2014CN203648888U 一种黑板擦除尘装置 One kind of eraser dust removal device
06/18/2014CN103862969A Dust absorption blackboard eraser
06/18/2014CN103862968A Dust collection eraser
06/18/2014CN103862967A Multifunctional blackboard eraser
06/18/2014CN103862966A Electric blackboard eraser
06/18/2014CN103862965A Multifunctional blackboard eraser
06/18/2014CN103862949A Intelligent teaching assistant blackboard
06/11/2014CN203637409U 机械结构黑板擦 Mechanical structure eraser
06/11/2014CN203637408U 一种黑板擦 One kind of eraser
06/11/2014CN203637398U 一种前后换位升降式快捷擦除粉尘的新型黑板 One kind of lift before the transposition of the new dust quickly erased blackboard
06/11/2014CN103847384A Chalk eraser with handle
06/11/2014CN103847383A Design method of novel office antiskid soft whiteboard-blackboard two-purpose eraser with hand guard cushion
06/11/2014CN103847382A Design method of novel office blackboard eraser with dustproof hand guard cover
06/11/2014CN103847381A Dust-free blackboard eraser
06/11/2014CN103847380A Teaching chalk dust collecting system
06/11/2014CN103847379A Design method for novel blackboard eraser
06/11/2014CN103847378A Simple air-suction type blackboard eraser
06/11/2014CN103847377A Multifunctional blackboard eraser cleaning equipment
06/11/2014CN103847376A Magnetic blackboard eraser capable of easily cleaning dust
06/11/2014CN103847375A Detachable blackboard eraser
06/11/2014CN103847374A Chalk eraser capable of carrying chalks
06/11/2014CN103847373A Retractable blackboard eraser
06/11/2014CN103847372A Blackboard eraser
06/11/2014CN103847371A Chalk eraser capable of carrying chalks
06/11/2014CN103847370A Design method of novel office multifunctional whiteboard eraser with coin measuring groove
06/11/2014CN103847369A Chalk dust collecting box
06/04/2014CN203623247U 一种可伸缩可拆卸黑板擦 A scalable removable eraser
06/04/2014CN203623246U 一种电动吸尘板刷 An electric vacuum scrubbing brush
06/04/2014CN203623245U 自动除尘式黑板 Automatic dust blackboard
06/04/2014CN203623244U 一种清尘黑板擦 A cleaning eraser dust
06/04/2014CN203623243U 一种全自动黑板刷 A fully automatic blackboard brush
06/04/2014CN203623242U 吸尘黑板擦 Eraser dust
06/04/2014CN203623241U 一种滚筒式吸尘黑板擦 A drum-type vacuum eraser
06/04/2014CN203623240U 无尘电动粉笔擦 Electric rub chalk dust
06/04/2014CN203623239U 一种吸尘黑板刷 One kind of cleaning the blackboard brush
06/04/2014CN203623238U 吸尘板擦 Vacuum Eraser
06/04/2014CN203623237U 黑板自动擦洗系统 Blackboard automatic scrubbing system
06/04/2014CN203623236U 一种两用擦板 One kind of dual-erase board
06/04/2014CN103832181A Chalk eraser with telescopic handle
06/04/2014CN103832180A Push-pull type blackboard eraser
06/04/2014CN103832179A Air pressure type electrostatic circulation dust collection blackboard eraser
06/04/2014CN103832178A Dust collection blackboard eraser
06/04/2014CN103832177A Blackboard eraser with dust receiving box
06/04/2014CN103832159A Conveying belt type electric tablet
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