| Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409) | |
|---|---|
| 10/2008 | |
| 10/01/2008 | CN201124701Y Magnetic blackboard eraser |
| 10/01/2008 | CN201124700Y Dust-absorbing blackboard eraser with water |
| 10/01/2008 | CN201124699Y Dustless blackboard eraser |
| 10/01/2008 | CN201124698Y Reflector blackboard eraser |
| 10/01/2008 | CN201124697Y Dustless blackboard eraser |
| 10/01/2008 | CN201124696Y Convenient telescopic blackboard eraser |
| 10/01/2008 | CN201124695Y Dual-purpose blackboard eraser |
| 10/01/2008 | CN201124694Y Environment-friendly blackboard eraser |
| 10/01/2008 | CN201124671Y Dust-less blackboard |
| 10/01/2008 | CN201124181Y Automatic device system for centralized dust absorption |
| 10/01/2008 | CN101274573A Blackboard-cleaning device |
| 10/01/2008 | CN101274572A Blackboard eraser |
| 10/01/2008 | CN101274571A Semiautomatic blackboard eraser |
| 09/2008 | |
| 09/24/2008 | CN201120815Y Envirnment protection blackboard eraser and cleaning bottle |
| 09/24/2008 | CN201120814Y Dust absorption blackboard |
| 09/24/2008 | CN201120813Y Electric blackboard eraser |
| 09/24/2008 | CN201120812Y Dust powder suction brush |
| 09/24/2008 | CN201120811Y Multifunctional blackboard eraser |
| 09/24/2008 | CN201120810Y Rail blackboard eraser |
| 09/24/2008 | CN201120809Y Spray water brush finish |
| 09/17/2008 | CN201116049Y Environmental protection blackboard with window curtain |
| 09/17/2008 | CN101264713A Dust absorption cleaner head |
| 09/17/2008 | CN100418792C Blackboard eraser |
| 09/16/2008 | US7425900 Clean hands assured with signal |
| 09/10/2008 | CN101259812A Magnetic blackboard eraser |
| 09/03/2008 | CN201109321Y Electric dust-absorbing blackboard eraser |
| 09/03/2008 | CN201109320Y Automatic blackboard eraser |
| 09/03/2008 | CN201109319Y 3-roller automatic blackboard eraser |
| 09/03/2008 | CN201109318Y Chalk wiper |
| 09/03/2008 | CN201109317Y Automatic dust-absorbing type blackboard eraser |
| 09/03/2008 | CN201109303Y Convenient blackboard |
| 09/03/2008 | CN201109301Y Dust-absorbing blackboard |
| 08/2008 | |
| 08/27/2008 | CN201105598Y Blackboard eraser |
| 08/27/2008 | CN201105597Y Pumping type piston blackboard eraser |
| 08/27/2008 | CN201105596Y Automatic dust removal blackboard eraser |
| 08/27/2008 | CN201105595Y Multifunctional blackboard eraser |
| 08/27/2008 | CN201105594Y Blackboard eraser |
| 08/27/2008 | CN201105593Y Electric blackboard eraser |
| 08/27/2008 | CN201105583Y Roller dust-free blackboard eraser |
| 08/27/2008 | CN201105581Y Automatic blackboard |
| 08/27/2008 | CN100413711C Electric blackboard brush with blocked magnets |
| 08/27/2008 | CN100413710C Magnetic electric eraser |
| 08/20/2008 | CN201102427Y Electric dust collecting eraser |
| 08/20/2008 | CN201102426Y Dustless blackboard |
| 08/20/2008 | CN201102425Y Blackboard eraser |
| 08/20/2008 | CN201102424Y Two-sided alternation dust-removing blackboard eraser |
| 08/20/2008 | CN201102423Y Novel chalk eraser |
| 08/20/2008 | CN201102422Y Chalk eraser |
| 08/20/2008 | CN201102421Y Electric eraser |
| 08/20/2008 | CN201102420Y Blackboard eraser |
| 08/20/2008 | CN201102407Y Dustproof blackboard |
| 08/20/2008 | CN201102388Y Chalk cover with blackboard eraser |
| 08/20/2008 | CN101244670A Dust-less blackboard |
| 08/13/2008 | CN201099112Y Dust-absorbing blackboard eraser |
| 08/13/2008 | CN201099111Y Dust-removing blackboard brush |
| 08/13/2008 | CN201099110Y Dust-proof highly effective blackboard eraser |
| 08/13/2008 | CN201099109Y Highly effective labor-saving blackboard eraser |
| 08/13/2008 | CN201099108Y Magnetic blackboard brush |
| 08/13/2008 | CN201099096Y Electric dust collecting blackboard |
| 08/13/2008 | CN201099095Y Automatic dust-removing blackboard |
| 08/06/2008 | CN201095254Y Extension blackboard eraser |
| 08/06/2008 | CN201095253Y Electric blackboard eraser |
| 08/06/2008 | CN201095238Y Rotatable blackboard |
| 07/2008 | |
| 07/30/2008 | CN201092211Y Multifunctional blackboard eraser |
| 07/30/2008 | CN201092210Y Environment protective blackboard brush |
| 07/30/2008 | CN201092209Y Roller dust removal blackboard eraser |
| 07/30/2008 | CN201092197Y Intelligent type environment protection blackboard |
| 07/23/2008 | CN201089319Y Dust-absorbing movable blackboard eraser |
| 07/23/2008 | CN201089318Y Dual-purpose blackboard eraser |
| 07/23/2008 | CN201089301Y Convenient blackboard |
| 07/23/2008 | CN201089290Y Concave-bend brush with cap for white board marker |
| 07/16/2008 | CN201086563Y Dust absorption blackboard |
| 07/16/2008 | CN201086562Y Environment-protection electric dust-suction blackboard eraser |
| 07/16/2008 | CN201086561Y Blackboard brush with dust absorption function |
| 07/16/2008 | CN201086560Y 黑板擦 Eraser |
| 07/16/2008 | CN201086539Y Multi-functional blackboard |
| 07/16/2008 | CN201086537Y Blackboard with brush |
| 07/16/2008 | CN101219623A Electric magnetic blackboard eraser |
| 07/09/2008 | CN201082649Y Dust absorbing chalk eraser |
| 07/09/2008 | CN201082648Y Dust-absorbing blackboard eraser |
| 07/09/2008 | CN201082647Y Novel blackboard eraser |
| 07/02/2008 | CN201080091Y Water leaking blackboard eraser |
| 07/02/2008 | CN201080076Y Electric blackboard |
| 07/02/2008 | CN201080074Y Dustless blackboard |
| 07/02/2008 | CN201080061Y Chalk sleeve |
| 06/2008 | |
| 06/25/2008 | CN201077297Y Blackboard eraser |
| 06/25/2008 | CN201077296Y Telescopic hand-bar blackboard eraser |
| 06/25/2008 | CN201077295Y Blackboard eraser having telescopic handle |
| 06/25/2008 | CN201077294Y Rotary type electric blackboard eraser |
| 06/25/2008 | CN201077293Y Modified blackboard eraser |
| 06/25/2008 | CN201077292Y Multifunctional blackboard eraser |
| 06/25/2008 | CN201077291Y Dust-proof blackboard eraser |
| 06/25/2008 | CN201077275Y Roll-over self-wiping blackboard |
| 06/25/2008 | CN201077274Y Blackboard having electric blackboard eraser and rear-vision mirror |
| 06/25/2008 | CN201077273Y Electric swinging type blackboard eraser |
| 06/25/2008 | CN201076129Y Chalk box with blackboard eraser |
| 06/18/2008 | CN201073884Y Electric dust-absorbing blackboard eraser |
| 06/18/2008 | CN201073883Y Closed blackboard eraser |
| 06/18/2008 | CN201073882Y Blackboard eraser |
| 06/18/2008 | CN201073881Y Vertically-wiping type automatic blackboard eraser |