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)
06/2014
06/04/2014CN103832158A Rotary type dust collection blackboard eraser
05/2014
05/28/2014CN203616903U 一种多功能教学指示器 A multifunctional teaching indicator
05/28/2014CN203611616U 一种板擦 One kind of eraser
05/28/2014CN203611615U 挡尘黑板擦 Dust eraser
05/28/2014CN203611614U 黑板擦除尘集尘器 Eraser dust dust collector
05/28/2014CN203611613U 一种黑板 One kind of blackboard
05/28/2014CN203611612U 一种除尘喷雾式黑板擦 One kind of eraser dust removal spray
05/28/2014CN203611611U 滚轮式吸尘集尘板擦 Roller Vacuum dust eraser
05/28/2014CN203611610U 滚轮式吸尘集尘传动装置 Vacuum dust roller gear
05/28/2014CN203611609U 遥控式自动清理黑板 Remote-controlled automatic cleaning blackboard
05/28/2014CN203611608U 新型摇摆式全自动吸尘黑板擦 The new swing type automatic vacuum eraser
05/28/2014CN103818166A 一种多功能清洁杆 A multifunctional cleaning rod
05/28/2014CN103818165A 防尘黑板擦拭装置 Dust blackboard wiping device
05/28/2014CN103818164A 吸尘黑板擦 Vacuum eraser
05/28/2014CN103818163A 一种防尘黑板擦 One kind of eraser dust
05/28/2014CN103818162A 一种改良黑板擦 An improved eraser
05/28/2014CN103818158A 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
05/27/2014US8733371 Apparatus and method for the controlled delivery of skin products and therapeutic agents
05/21/2014CN203600858U 一种防尘黑板擦 One kind of eraser dust
05/21/2014CN203600857U 一种黑板清洁装置 One kind of blackboard cleaning device
05/21/2014CN203600856U 一种带快速黑板擦的黑板 A blackboard eraser with quick
05/21/2014CN203600855U 一种新型教学板 A new teaching board
05/21/2014CN203600854U 一种环保型黑板擦 An environmentally friendly eraser
05/21/2014CN203600853U 一种粉笔刷 One kind of powder brushes
05/21/2014CN203600852U 一种黑板擦 One kind of eraser
05/21/2014CN203600851U 一种黑板擦 One kind of eraser
05/21/2014CN203600850U 一种黑板槽清洁装置 One kind of blackboard tank cleaning device
05/21/2014CN203600849U 一种黑板擦 One kind of eraser
05/21/2014CN203600837U 一种组合式黑板 A modular blackboard
05/21/2014CN203599154U 一种可充电式黑板擦去灰盒 One kind of rechargeable blackboard wipe gray box
05/21/2014CN103802563A 带接灰盒的黑板擦 With the ash box eraser
05/21/2014CN103802562A 无痕板擦 Seamless eraser
05/21/2014CN103802561A 设置磁性吸块的黑板擦 Set blocks rub magnetic suction blackboard
05/21/2014CN103802560A 一种自动擦黑板机 An automatic effaceurs machine
05/21/2014CN103802551A 一种三面翻黑板 A three sides over the blackboard
05/14/2014CN203592840U 一种用于全自动无尘黑板擦的浮动机构 An automatic clean eraser floating bodies
05/14/2014CN203592839U 触控自动吸尘多功能黑板擦 Touch automatic vacuuming versatility eraser
05/14/2014CN203592838U 一种黑板擦套 One kind of eraser sets
05/14/2014CN203592837U 吸灰黑板擦 Suction gray eraser
05/14/2014CN203592836U 一种多功能教学黑板装置 A multifunctional device blackboard teaching
05/14/2014CN203592835U 一种全自动无尘黑板擦 A fully automated clean eraser
05/14/2014CN203592834U 一种用于全自动无尘黑板擦的偏转机构 An automatic clean eraser deflection mechanism
05/14/2014CN203592828U 新型三面翻转式黑板 The new three-sided flip-style blackboard
05/14/2014CN203592827U 黑板总成 Blackboard assembly
05/14/2014CN103786504A 一种新型板檫 A new board Sassafras
05/14/2014CN103786503A 黑板擦 Eraser
05/14/2014CN103786502A 设置有粉笔盒的黑板擦 Provided with a box of chalk eraser
05/14/2014CN103786495A 环保黑板 Green blackboard
05/07/2014CN203580454U 吸尘黑板擦 Vacuum eraser
05/07/2014CN203580453U 自动吸尘式黑板擦 Automatic vacuum-type eraser
05/07/2014CN203580452U 一种可收集粉尘的黑板刷 One kind can collect dust blackboard brush
05/07/2014CN203580451U 一种新型的黑板擦 A new eraser
05/07/2014CN203580450U 一种水式自清洁除痕板擦 In addition to a water-type self-cleaning eraser marks
05/07/2014CN203580436U 一种双滚筒式柔性多功能黑板 A dual drum type of flexible multi-purpose blackboard
05/07/2014CN203580434U 新型环保黑板 New environmentally friendly blackboard
05/07/2014CN203580432U 一种学生用智能黑板 One kind of student smart blackboard
05/07/2014CN203580428U 新型黑板 The new board
05/07/2014CN103770540A 手套式黑板擦 Glove eraser
04/2014
04/30/2014CN203567428U Dust collection blackboard eraser
04/30/2014CN203567427U Mechanical blackboard eraser free of power dissipation
04/30/2014CN203567426U Blackboard eraser allowing dust to be removed
04/30/2014CN203567425U Automatic blackboard eraser
04/30/2014CN203567424U Automatically-erased blackboard
04/30/2014CN103754032A Handle blackboard eraser
04/30/2014CN103754031A Blackboard eraser
04/30/2014CN103754030A Dust-free blackboard eraser
04/30/2014CN103754025A Circulatory alternative cleaning-free dust-free blackboard
04/23/2014CN203557898U Demonstrating board used for public management teaching
04/23/2014CN203557897U Chalk dust collecting device
04/23/2014CN203557896U Eraser
04/23/2014CN203557895U Whiteboard eraser with four line grid scriber
04/23/2014CN203557886U Blackboard for tourism management practical teaching
04/16/2014CN203543466U Manual dedusting blackboard eraser
04/16/2014CN203543465U Magnetic powder laying device for magnetic environment-friendly blackboard
04/16/2014CN203543464U Dustproof blackboard eraser
04/16/2014CN203543463U Blackboard capable of being fast cleaned
04/16/2014CN203543462U Multifunctional blackboard eraser
04/16/2014CN203543448U Automatically-cleaned noiseless blackboard
04/16/2014CN203543447U Blackboard dust removal device
04/16/2014CN103722963A Full-automatic dustless blackboard eraser
04/16/2014CN103722962A Dust absorption blackboard eraser
04/16/2014CN103722961A Dustless blackboard eraser
04/16/2014CN103722954A Blackboard device capable of automatically erasing characters
04/16/2014CN103722953A Full-automatic writing blackboard
04/09/2014CN203528156U Multifunctional dust-collection type blackboard eraser
04/09/2014CN203528155U Multifunctional blackboard eraser
04/09/2014CN203528154U Drum type electric board wiper
04/09/2014CN203528141U Electronic teaching board for English
04/09/2014CN203528139U Mathematics teaching board
04/09/2014CN103707700A Multifunctional automatic blackboard eraser
04/09/2014CN103707699A Chalkboard eraser
04/09/2014CN103707693A Design method of blackboard
04/02/2014CN203511087U Cleanable blackboard eraser
04/02/2014CN203511086U Dust-free blackboard eraser
04/02/2014CN203511085U Novel multifunctional blackboard eraser
04/02/2014CN203511063U Board wiping device of dustless blackboard
04/02/2014CN103692826A Novel lift type blackboard capable of changing front and back positions and quickly wiping off dust
04/02/2014CN102225675B Multifunctional electric self-cleaning teaching blackboard
03/2014
03/26/2014CN203503181U Multifunctional ideological and moral cultivation and legal basis teaching blackboard
03/26/2014CN203496523U Pollution-free blackboard for teaching
1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 55