| Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409) | |
|---|---|
| 08/2013 | |
| 08/14/2013 | CN203126296U Simple ash absorbing blackboard eraser |
| 08/14/2013 | CN203126295U Electric blackboard eraser |
| 08/14/2013 | CN203126294U Novel dust-free intelligent blackboard wiping device |
| 08/14/2013 | CN203126293U Blackboard eraser |
| 08/14/2013 | CN203126292U Dust reduction blackboard eraser |
| 08/14/2013 | CN203126254U Multifunctional blackboard capable of collecting chalk powder automatically |
| 08/14/2013 | CN203126253U Automatic dust absorbing blackboard |
| 08/14/2013 | CN203126251U Blackboard with rolling brush |
| 08/14/2013 | CN203126248U Electric blackboard |
| 08/14/2013 | CN103241043A Single-sided dust collection blackboard eraser |
| 08/14/2013 | CN103241042A Blackboard dust-removing system |
| 08/13/2013 | US8505551 Exfoliating shower mat |
| 08/07/2013 | CN203118243U English teaching board |
| 08/07/2013 | CN203110727U Blackboard eraser |
| 08/07/2013 | CN203110726U Novel dust absorption blackboard eraser |
| 08/07/2013 | CN203110725U Dust-absorption blackboard eraser |
| 08/07/2013 | CN203110724U Powder-absorbable blackboard eraser |
| 08/07/2013 | CN203110723U Dust-absorbable blackboard eraser |
| 08/07/2013 | CN203110722U Multifunctional board wiper |
| 08/07/2013 | CN203110721U Dustproof blackboard eraser box |
| 08/07/2013 | CN203110720U Dust-absorption-type semiautomatic blackboard eraser |
| 08/07/2013 | CN203110719U Blackboard eraser |
| 08/07/2013 | CN203110718U Novel blackboard used for teaching |
| 08/07/2013 | CN203110717U Blackboard eraser paste |
| 08/07/2013 | CN203110716U Attraction type blackboard eraser device |
| 08/07/2013 | CN203110715U Blackboard eraser |
| 08/07/2013 | CN203110714U Automatic blackboard eraser |
| 08/07/2013 | CN203110713U Detachable and cleanable blackboard eraser |
| 08/07/2013 | CN203110668U Labor-saving environment-friendly blackboard with multiple faces |
| 08/07/2013 | CN203110663U Blackboard provided with fast blackboard eraser |
| 08/07/2013 | CN203110661U Blackboard |
| 08/07/2013 | CN203110660U Blackboard and eraser integrated machine |
| 08/07/2013 | CN203110657U Dust guarding blackboard |
| 08/07/2013 | CN203110620U Modified chalk sleeve for teaching |
| 08/07/2013 | CN103231611A Blackboard eraser |
| 08/07/2013 | CN103231604A Blackboard with automatic dust collection eraser |
| 08/07/2013 | CN103231603A Novel negative pressure environmentally-friendly multi-functional blackboard |
| 07/2013 | |
| 07/31/2013 | CN203093547U Multifunctional eraser convenient to use |
| 07/31/2013 | CN203093546U Glove type blackboard eraser with chalk clamp |
| 07/31/2013 | CN203093545U Automatic blackboard wiper |
| 07/31/2013 | CN203093544U Novel blackboard eraser provided with handguard dust-proof cover and used in office |
| 07/31/2013 | CN203093543U Novel anti-slip soft dual-purpose eraser provided with handguard pad and used for white board and blackboard in office |
| 07/31/2013 | CN203093542U Dust-free blackboard eraser for teaching |
| 07/31/2013 | CN203093541U Dedusting blackboard eraser |
| 07/31/2013 | CN203093540U Novel dedusting blackboard eraser |
| 07/31/2013 | CN203093539U Novel dust-free blackboard eraser for teaching |
| 07/31/2013 | CN203093538U Automatic dust-absorption-type blackboard eraser |
| 07/31/2013 | CN203093537U 防尘黑板擦 Dust eraser |
| 07/31/2013 | CN203093536U Environment-friendly blackboard eraser |
| 07/31/2013 | CN203093535U Dustproof blackboard eraser |
| 07/31/2013 | CN203093534U Power-driven blackboard eraser |
| 07/31/2013 | CN203093533U Dustproof blackboard eraser |
| 07/31/2013 | CN203093532U New type blackboard eraser |
| 07/31/2013 | CN203093531U Water-storage blackboard eraser |
| 07/31/2013 | CN203093530U Blackboard eraser |
| 07/31/2013 | CN203093529U Spliced type blackboard eraser |
| 07/31/2013 | CN203093528U Dust-absorption blackboard eraser |
| 07/31/2013 | CN203093483U Novel blackboard for teaching |
| 07/31/2013 | CN203093478U Movable blackboard with blackboard erasers |
| 07/31/2013 | CN203093476U 黑板 Blackboard |
| 07/31/2013 | CN203093473U Automatic cleaning blackboard |
| 07/31/2013 | CN203093472U Intelligent auxiliary teaching blackboard |
| 07/31/2013 | CN203093428U Multifunctional teaching aid |
| 07/31/2013 | CN103223805A Vacuum-type blackboard eraser |
| 07/31/2013 | CN103223804A Blackboard eraser |
| 07/24/2013 | CN203078145U Movable blackboard eraser |
| 07/24/2013 | CN203078144U Blackboard eraser |
| 07/24/2013 | CN203078143U Dustproof blackboard eraser with dust board |
| 07/24/2013 | CN203078142U Dustproof blackboard eraser with slide rails |
| 07/24/2013 | CN203078141U Dust-absorbing blackboard eraser |
| 07/24/2013 | CN203078140U Dust-collection board eraser |
| 07/24/2013 | CN203078139U Dustproof blackboard |
| 07/24/2013 | CN203078138U Dust fall prevention blackboard eraser |
| 07/24/2013 | CN203078137U Cleaner capable of rapidly cleaning blackboard |
| 07/24/2013 | CN203078136U Electric blackboard eraser |
| 07/24/2013 | CN203078135U Non-dust blackboard eraser |
| 07/24/2013 | CN203078134U Dust absorption blackboard eraser |
| 07/24/2013 | CN203078133U Electrostatic dust absorption board wiper |
| 07/24/2013 | CN203078132U Dustproof board eraser |
| 07/24/2013 | CN203078131U Static blackboard eraser |
| 07/24/2013 | CN203078130U Eraser with wet cloth and dryer |
| 07/24/2013 | CN203078129U Dust absorption blackboard eraser |
| 07/24/2013 | CN203078128U Multifunctional blackboard eraser |
| 07/24/2013 | CN203078127U Dust absorption blackboard eraser |
| 07/24/2013 | CN203078126U Blackboard eraser with freshener |
| 07/24/2013 | CN203078125U Blackboard eraser |
| 07/24/2013 | CN203078124U Dustproof blackboard eraser |
| 07/24/2013 | CN203078123U Dust-suction chalk eraser |
| 07/24/2013 | CN203078122U English teaching board convenient to operate |
| 07/24/2013 | CN203078121U Blackboard cleaning device |
| 07/24/2013 | CN203078120U Novel black board |
| 07/24/2013 | CN203078119U Board eraser with replaceable eraser head |
| 07/24/2013 | CN203078118U Automatic blackboard eraser |
| 07/24/2013 | CN203078117U Blackboard eraser capable of being dismantled |
| 07/24/2013 | CN203078116U Dustproof rapid blackboard eraser |
| 07/24/2013 | CN203078115U Blackboard eraser with storage box |
| 07/24/2013 | CN203078114U Blackboard eraser capable of containing chalks |
| 07/24/2013 | CN203078113U Blackboard eraser |
| 07/24/2013 | CN203078112U Eraser support with wiping cloth |
| 07/24/2013 | CN203078111U Blackboard eraser capable of spraying water |