| Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409) |
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| 02/11/2015 | CN204149732U 一种防粉尘多功能黑板擦 An anti-dust multifunctional eraser |
| 02/11/2015 | CN204149731U 滚幕式自动除尘黑板 Roll curtain automatic dust blackboard |
| 02/11/2015 | CN204149730U 一种高中政治老师使用的手套式黑板擦 Gloves blackboard teacher used a high school politics rub |
| 02/11/2015 | CN204149729U 一种旅游管理实践教学黑板 One kind of tourism management practice teaching blackboard |
| 02/11/2015 | CN204149716U 无尘黑板 Clean the blackboard |
| 02/11/2015 | CN104339951A 一种黑板擦 One kind of eraser |
| 02/11/2015 | CN104339943A 一种黑板 One kind of blackboard |
| 02/11/2015 | CN103231604B 一种带有自动收尘板擦的黑板 An automatic collecting blackboard with eraser |
| 02/04/2015 | CN204136660U 一种环保黑板擦 An environmentally friendly eraser |
| 02/04/2015 | CN204136659U 静电黑板擦 Electrostatic eraser |
| 02/04/2015 | CN204136658U 环保黑板擦 Environmental eraser |
| 02/04/2015 | CN204136654U 多功能教学装置 Multifunctional devices |
| 02/04/2015 | CN204136642U 一种适用于数学专业改进的黑板结构 One for improvement in mathematics blackboard structure |
| 02/04/2015 | CN204136639U 一种多功能黑板 A multifunctional blackboard |
| 02/04/2015 | CN204136638U 一种滑动式半自动黑板 A sliding-type semi-automatic blackboard |
| 02/04/2015 | CN104325821A 一种压力可调全自动吸尘黑板擦除装置 A pressure adjustable automatic cleaning the blackboard erasing device |
| 02/04/2015 | CN104325820A 一种伸缩黑板擦 One kind of retractable eraser |
| 02/04/2015 | CN104325816A 智能黑板 Smart blackboard |
| 01/28/2015 | CN204123866U 一种多功能黑板擦 A multifunctional eraser |
| 01/28/2015 | CN204123865U 一种旋风式黑板擦 A cyclonic type eraser |
| 01/28/2015 | CN204123864U 一种注水黑板刷 One kind of water blackboard brush |
| 01/28/2015 | CN204123863U 多功能教具 Multifunction aids |
| 01/28/2015 | CN204123862U 选择性自动擦除笔迹的黑板 Selective automatically erase handwriting blackboard |
| 01/28/2015 | CN204123861U 一种用于吸水板擦的蘸水槽 Dip tank for water absorption eraser |
| 01/28/2015 | CN104309377A 一种吸尘黑板擦 One kind of eraser dust |
| 01/28/2015 | CN104309376A 一种电动除尘双效黑板擦 An electric double-effect eraser dust |
| 01/28/2015 | CN104309375A 环保无尘清洁器 Environmental clean cleaner |
| 01/28/2015 | CN103253046B 一种湿式无尘黑板清洁装置 A wet clean blackboard cleaning device |
| 01/21/2015 | CN204109636U 循环环保黑板刷 Cycle environmental blackboard brush |
| 01/21/2015 | CN204109635U 新型白板擦 The new Whiteboard Eraser |
| 01/21/2015 | CN204109634U 手持式电动黑板擦 Handheld electric eraser |
| 01/21/2015 | CN204109619U 一种气动式自动擦除黑板 One kind of pneumatic auto-erase board |
| 01/21/2015 | CN104290506A 一种新型自动清洁黑板 A new automatic cleaning blackboard |
| 01/21/2015 | CN102673273B 一种电动黑板擦 An electric eraser |
| 01/14/2015 | CN204095375U 一种无尘黑板檫 One kind of clean blackboard Sassafras |
| 01/14/2015 | CN204095374U 一种黑板擦结构 One kind of eraser structure |
| 01/14/2015 | CN204095373U 新型全自动吸尘黑板擦 New automatic vacuum eraser |
| 01/14/2015 | CN204095372U 一种锥形双铰龙集尘式电动黑板擦 One kind of conical twin auger electric eraser dust |
| 01/14/2015 | CN204095371U 教学黑板书写擦拭粉尘收集装置 Teaching writing blackboard wipe dust collection device |
| 01/14/2015 | CN204095370U 一种五线谱粉笔擦 One kind stave rub chalk |
| 01/14/2015 | CN204095369U 可更换磁性黑白板擦 Black and white interchangeable magnetic eraser |
| 01/14/2015 | CN204095352U 双面翻转式环保黑板 Double-sided flip-green blackboard |
| 01/14/2015 | CN204095347U 一种自动黑板 An automatic blackboard |
| 01/14/2015 | CN204095345U 教学黑板辅助照明板面擦拭装置 Teaching blackboard wipe board auxiliary lighting device |
| 01/14/2015 | CN104275972A 一种无尘黑板擦 One kind of clean eraser |
| 01/14/2015 | CN103192630B 板条式自动翻转背洁黑板 Slatted automatically flip back clean blackboard |
| 01/07/2015 | CN204077185U 方便语文教学用带竖擦板刷的教学板装置 Easy to use with a vertical wipe language teaching teaching board scrubbing device |
| 01/07/2015 | CN204077184U 新型黑板擦 The new eraser |
| 01/07/2015 | CN204077183U 一种具有自动清洁装置的黑板 An automatic cleaning device having a blackboard |
| 01/07/2015 | CN204077182U 新型全自动吸尘黑板擦 New automatic vacuum eraser |
| 01/07/2015 | CN204077181U 清洁黑板擦 Clean eraser |
| 01/07/2015 | CN204077180U 一种白板擦 One kind of white lint |
| 01/07/2015 | CN204077179U 一种黑板擦 One kind of eraser |
| 01/07/2015 | CN204077178U 一种用于黑板的自动双向清洁装置 Automatic cleaning apparatus for bidirectional blackboard |
| 01/07/2015 | CN204077177U 一种单拉黑板残留痕迹清除装置 A single-pull blackboard residual traces of the cleaning device |
| 01/07/2015 | CN204077176U 一种切换式黑板擦 A handover ceremony eraser |
| 01/07/2015 | CN204077161U 设有自动清擦装置的黑板 There blackboard automatic wiping device |
| 01/07/2015 | CN104260584A 一种防尘高效的黑板擦 One kind of eraser dust Efficient |
| 01/07/2015 | CN104260583A 一种具有防尘功能的黑板 Blackboard a dustproof function |
| 01/07/2015 | CN104260582A 一种白板 One kind of whiteboard |
| 12/31/2014 | CN204055096U 一种黑板擦拭除尘系统 One kind of blackboard wipe dust removal system |
| 12/31/2014 | CN204055095U 一种黑板擦 One kind of eraser |
| 12/31/2014 | CN204055094U 一种黑板擦 One kind of eraser |
| 12/31/2014 | CN204055093U 电动吸尘黑板擦 Electric vacuum blackboard eraser |
| 12/31/2014 | CN204055092U 一种黑板擦洗装置 One kind of blackboard scrubbing device |
| 12/31/2014 | CN204055091U 一种旋转自擦防尘式黑板 A rotating self wiping dust blackboard |
| 12/31/2014 | CN204055090U 一种英语教学用的黑板擦 One kind of English teaching with eraser |
| 12/31/2014 | CN204055089U 滑式黑板檫 Sliding blackboard Sassafras |
| 12/31/2014 | CN204055065U 一种移动式可自动擦拭的黑板 A mobile automatic wipe the blackboard |
| 12/31/2014 | CN204055064U 汉语言文学教学用多功能黑板 Chinese Language and Literature Teaching multifunction blackboard |
| 12/31/2014 | CN204055063U 一种黑板 One kind of blackboard |
| 12/31/2014 | CN204055061U 一种挂吊式多功能黑板 One kind of hanging blackboard hanging multifunction |
| 12/31/2014 | CN204055059U 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 |
| 12/31/2014 | CN204055058U 窗型可收卷式黑板 Window type can be rolling blackboard |
| 12/31/2014 | CN204055057U 自清洁低粉尘黑板 Low self-cleaning dust blackboard |
| 12/31/2014 | CN204055056U 多功能黑板 Multifunction blackboard |
| 12/31/2014 | CN204055050U 环保防尘无逆光健康教学写字板 Environmental dust-free backlit health teaching WordPad |
| 12/31/2014 | CN104249592A 一种带有电动黑板擦的黑板 An electric blackboard with eraser |
| 12/31/2014 | CN104249589A 电动黑板 Electric blackboard |
| 12/24/2014 | CN204037185U 一种自动吸尘黑板擦 An automatic dust eraser |
| 12/24/2014 | CN204037184U 一种环保型黑板 An environmentally friendly blackboard |
| 12/24/2014 | CN204037183U 一种具有排尘功能的黑板擦 Dust features a blackboard with a wipe |
| 12/24/2014 | CN204037182U 一种能吸粉尘的黑板擦 One kind can absorb dust eraser |
| 12/24/2014 | CN204037181U 一种太阳能辅助供电的遥控自动化黑板擦 A solar-powered auxiliary remote automation eraser |
| 12/24/2014 | CN204037180U 一种自动擦黑板机 An automatic machine to clean the blackboard |
| 12/24/2014 | CN204037179U 一种可水洗风干的方便语文教学用黑板 An easy language teaching can be washed with dried blackboard |
| 12/24/2014 | CN204037178U 一种新型黑板擦 A new eraser |
| 12/24/2014 | CN204037177U 一种黑板擦洗装置 One kind of blackboard scrubbing device |
| 12/24/2014 | CN104228426A 一种教学黑板全自动清洁机 A teaching blackboard automatic cleaning machine |
| 12/24/2014 | CN104228425A 一种遥控电动黑板擦 A remote control electric eraser |
| 12/24/2014 | CN104228401A 吸尘笔套 Vacuum pen |
| 12/17/2014 | CN204020350U 一种黑板擦 One kind of eraser |
| 12/17/2014 | CN204020349U 一种太阳能半自动吸尘黑板擦 A solar semi-automatic vacuum eraser |
| 12/17/2014 | CN204020348U 一种擦拭干净无粉尘的黑板擦 One kind of wipe clean dust-free eraser |
| 12/17/2014 | CN204020347U 一种电动吸尘黑板擦 An electric vacuum blackboard eraser |
| 12/17/2014 | CN204020346U 收纳式黑板擦 Retractable eraser |
| 12/17/2014 | CN204020345U 一种双层两用黑板擦 A two-layer dual eraser |
| 12/17/2014 | CN204020344U 一种黑板擦 One kind of eraser |
| 12/17/2014 | CN204020343U 带滑盖的黑板擦 Blackboard with slide rub |
| 12/17/2014 | CN204020342U 一种黑板擦洗装置 One kind of blackboard scrubbing device |