| Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409) | |
|---|---|
| 03/2012 | |
| 03/14/2012 | CN102371822A Rolling blackboard |
| 03/14/2012 | CN102371819A High-efficiency blackboard |
| 03/07/2012 | CN202156202U 黑板擦套 Eraser sets |
| 03/07/2012 | CN202156201U 黑板擦 Eraser |
| 03/07/2012 | CN202156200U 新式黑板擦 New eraser |
| 03/07/2012 | CN202156199U 多功能电动黑板擦 Multifunctional electric eraser |
| 03/07/2012 | CN202156198U 一种电动擦黑板器 An electric effaceurs device |
| 03/07/2012 | CN202156177U 一种装有机械臂的书写板 One kind of writing board equipped with robotic arm |
| 03/07/2012 | CN102367033A Automatic dust-absorption blackboard eraser |
| 03/07/2012 | CN102367032A Wet-adsorbing dust-free blackboard eraser |
| 02/2012 | |
| 02/29/2012 | CN202151982U 一种吸尘黑板擦 One kind of eraser dust |
| 02/29/2012 | CN202151981U 新型黑板擦 The new eraser |
| 02/29/2012 | CN202151972U 一种黑板 One kind of blackboard |
| 02/29/2012 | CN102363401A Automatic dry erasing blackboard eraser for vertically sliding blackboard |
| 02/22/2012 | CN202147521U 便捷式黑板擦除系统 Portable blackboard erasing system |
| 02/22/2012 | CN202147520U 电动黑板擦 Electric eraser |
| 02/22/2012 | CN202147519U 带滚刷的黑板擦 Blackboard with a brush wipe |
| 02/22/2012 | CN202147518U 自动黑板擦 Automatic eraser |
| 02/15/2012 | CN202144166U 折叠黑板擦 Folding eraser |
| 02/15/2012 | CN102350905A Circulating self-erasing blackboard |
| 02/08/2012 | CN202138121U 一种除尘板擦 One kind of eraser dust |
| 02/08/2012 | CN202138120U 吸尘黑板刷 Cleaning the blackboard brush |
| 02/08/2012 | CN202138119U 不用清理的黑板擦 Do not clean eraser |
| 02/08/2012 | CN102343753A Full-automatic blackboard eraser with dust sucking device |
| 02/08/2012 | CN102343752A Dustless blackboard eraser |
| 02/08/2012 | CN102343751A Sliding blackboard eraser |
| 02/08/2012 | CN102343750A Wall type blackboard eraser capable of automatically removing dust |
| 02/08/2012 | CN102343749A Electric environment-friendly energy-saving blackboard eraser |
| 02/08/2012 | CN102343748A Blackboard eraser with detachable swiping surface |
| 02/08/2012 | CN102343746A Multifunctional blackboard |
| 02/08/2012 | CN102343745A Novel blackboard |
| 02/08/2012 | CN102343743A Dust-free colored magnetic powder writing blackboard |
| 02/01/2012 | CN202130200U 挡灰黑板擦 Gray block eraser |
| 02/01/2012 | CN202130199U 一种吸尘黑板擦及其系统 One kind of eraser dust and systems |
| 02/01/2012 | CN202130198U 快速清洁黑板装置 Quick clean blackboard system |
| 02/01/2012 | CN102336107A Automatic environment-friendly blackboard eraser |
| 02/01/2012 | CN102336106A Blackboard eraser |
| 02/01/2012 | CN102336105A Water seepage blackboard eraser |
| 02/01/2012 | CN102336104A Novel blackboard brush |
| 02/01/2012 | CN102336103A Blackboard eraser |
| 02/01/2012 | CN102336102A Eraser capable of transversely pulling and drawing |
| 01/2012 | |
| 01/25/2012 | CN202123867U Telescopic blackboard eraser |
| 01/25/2012 | CN202123866U Blackboard cleaning device |
| 01/25/2012 | CN202123865U Eraser capable of reducing chalk dust |
| 01/25/2012 | CN202123864U Blackboard eraser |
| 01/25/2012 | CN202123863U Dust collection blackboard eraser |
| 01/25/2012 | CN202123862U Water spray blackboard eraser |
| 01/25/2012 | CN202123861U Retractable blackboard eraser |
| 01/25/2012 | CN202123860U Swappable blackboard eraser |
| 01/25/2012 | CN202123859U Loss prevention blackboard eraser |
| 01/25/2012 | CN202123858U Blackboard cleaner |
| 01/25/2012 | CN202123857U Multifunctional chalk brush |
| 01/25/2012 | CN102328538A Light-emitting diode (LED) blackboard eraser |
| 01/25/2012 | CN102328537A Blackboard eraser |
| 01/25/2012 | CN102328536A Dry and wet dual-purpose blackboard eraser |
| 01/25/2012 | CN102328535A Blackboard eraser |
| 01/18/2012 | CN202115222U Multifunctional blackboard eraser |
| 01/18/2012 | CN202115221U Blackboard eraser ash collector |
| 01/18/2012 | CN202115220U Magnetic chalk eraser package |
| 01/18/2012 | CN202115219U Novel eraser |
| 01/18/2012 | CN202115218U Blackboard eraser |
| 01/18/2012 | CN202115217U Telescopic blackboard eraser |
| 01/18/2012 | CN202115216U Multipurpose eraser |
| 01/18/2012 | CN202115215U Sound control blackboard eraser |
| 01/18/2012 | CN202115214U Glove-shaped blackboard eraser |
| 01/18/2012 | CN202115213U Novel dustless blackboard eraser |
| 01/18/2012 | CN202115191U Blackboard with rollers |
| 01/18/2012 | CN202115187U Blackboard easy to be cleaned |
| 01/18/2012 | CN202115186U Segmented drawable blackboard groove |
| 01/18/2012 | CN102320207A Dust collection blackboard eraser |
| 01/11/2012 | EP1618008B1 Writing assembly in combination with an eraser assembly |
| 01/11/2012 | CN202110688U 两用教鞭 Dual Pointer |
| 01/11/2012 | CN202106770U Novel blackboard eraser |
| 01/11/2012 | CN202106769U Blackboard eraser capable of absorbing dust |
| 01/11/2012 | CN202106768U Dust-absorbing blackboard eraser |
| 01/11/2012 | CN202106767U Manual charging dust-absorbing blackboard eraser |
| 01/11/2012 | CN202106766U Blackboard eraser |
| 01/11/2012 | CN202106765U Multifunctional blackboard eraser |
| 01/11/2012 | CN202106764U Chalk dust using device |
| 01/11/2012 | CN202106763U Blackboard with a suction disk |
| 01/11/2012 | CN202106746U Novel blackboard |
| 01/11/2012 | CN102310696A Water spray blackboard eraser |
| 01/11/2012 | CN102310695A Dust-proof blackboard eraser |
| 01/11/2012 | CN102310690A Manufacture method for chalk with telescopic holding handle |
| 01/04/2012 | CN202098202U Electric blackboard eraser |
| 01/04/2012 | CN202098201U Environment-friendly dust collecting blackboard eraser special for painting teaching |
| 01/04/2012 | CN202098200U Dust absorption blackboard brush |
| 01/04/2012 | CN202098199U Electric dust-sucking blackboard eraser |
| 01/04/2012 | CN202098198U Reusable blackboard eraser |
| 01/04/2012 | CN202098197U Dust-proof blackboard eraser |
| 01/04/2012 | CN202098179U Writing and cleaning integrated blackboard |
| 01/04/2012 | CN202098178U Blackboard |
| 01/04/2012 | CN202098176U Novel blackboard capable of automatically erasing chalk dust by switching |
| 12/2011 | |
| 12/28/2011 | CN202088755U 黑板净尘器的滑动安装装置 Blackboard net dust slide mounting device |
| 12/28/2011 | CN202088735U 一种新型黑板 A new board |
| 12/28/2011 | CN202088733U 一种黑板万用清洁器 One kind of blackboard Universal cleaner |
| 12/28/2011 | CN202086420U 清洁机用集尘箱机构 Cleaner box with dust agency |
| 12/28/2011 | CN102294927A 可伸缩黑板擦 Scalable eraser |
| 12/28/2011 | CN102294926A 多功能黑板擦 Multifunction eraser |
| 12/28/2011 | CN102294925A 新型黑板擦 The new eraser |