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)
12/2012
12/19/2012CN102825958A Blackboard eraser capable of absorbing dust
12/19/2012CN102825957A Automatic dustless blackboard eraser
12/12/2012CN202593114U Novel blackboard eraser
12/12/2012CN202593113U Blackboard eraser
12/12/2012CN202593112U Multifunctional blackboard eraser
12/12/2012CN202593111U Novel blackboard eraser
12/12/2012CN202593110U Green dustless blackboard eraser
12/12/2012CN202593109U Dust absorption blackboard eraser
12/12/2012CN202593108U Elastic blackboard eraser
12/12/2012CN202593107U Blackboard eraser with two soft bodies
12/12/2012CN202593106U Multi-function eraser
12/12/2012CN202593105U Multipurpose blackboard eraser
12/12/2012CN202593104U Novel blackboard eraser
12/12/2012CN202593103U Novel blackboard eraser
12/12/2012CN202593102U Novel blackboard eraser
12/12/2012CN202593101U Multipurpose blackboard eraser
12/12/2012CN202593100U Novel blackboard eraser
12/12/2012CN202593099U Blackboard eraser
12/12/2012CN202593098U Multipurpose blackboard eraser
12/12/2012CN202593097U Blackboard eraser
12/12/2012CN202593096U Multi-functional blackboard eraser
12/12/2012CN202593095U Novel blackboard eraser
12/12/2012CN202593094U Automatic blackboard eraser
12/12/2012CN202593093U Blackboard eraser
12/12/2012CN202593068U Dust-free blackboard
12/12/2012CN202593065U Automatic-erasing type writing board
12/12/2012CN202588661U Environment-friendly eraser box integrating water dipping, water squeezing and water scraping functions
12/12/2012CN102815151A Whiteboard eraser
12/12/2012CN102815150A Environment-friendly blackboard eraser
12/12/2012CN102815149A Blackboard eraser
12/12/2012CN102815148A Blackboard eraser capable of storing chalk
12/12/2012CN102815147A Blackboard washing device
12/12/2012CN102815141A Automatically-controlled electric blackboard
12/12/2012CN102815125A Blackboard-writing integrated device
12/05/2012CN202573543U Novel blackboard brush
12/05/2012CN202573542U Blackboard brush
12/05/2012CN202573541U Dust collecting blackboard eraser
12/05/2012CN202573540U Dust absorption eraser
12/05/2012CN202573539U Sound amplifying dust-free eraser
12/05/2012CN202573538U Chalk dust recovery device
12/05/2012CN202573537U Blackboard eraser dusting box
12/05/2012CN202573536U Multifunctional blackboard brush
12/05/2012CN202573535U Fast blackboard brush
12/05/2012CN202573534U Blackboard eraser
12/05/2012CN202573533U Whiteboard eraser capable of spraying cleaning agent
12/05/2012CN202573532U Retractable blackboard eraser
12/05/2012CN202573531U Novel blackboard eraser
12/05/2012CN202573530U Blackboard eraser
12/05/2012CN202573529U Electric dust absorption blackboard eraser
12/05/2012CN202573528U Blackboard brush
12/05/2012CN202573490U Wipe-free rolling blackboard
12/05/2012CN202573481U Dustproof blackboard device
12/05/2012CN202573480U Blackboard capable of absorbing dust
11/2012
11/28/2012CN202557141U Telescopic blackboard eraser
11/28/2012CN202557140U Extensible blackboard eraser
11/28/2012CN202557139U Blackboard eraser with air blower
11/28/2012CN202557138U Dust-collecting blackboard eraser
11/28/2012CN202557137U Dust absorption blackboard eraser with internally-installed fan
11/28/2012CN202557136U Novel blackboard eraser
11/28/2012CN202557135U Dust-collecting blackboard eraser
11/28/2012CN202557134U Dustproof blackboard eraser
11/28/2012CN202557133U Dust-absorbing blackboard eraser
11/28/2012CN202557132U Novel dust absorption blackboard eraser system
11/28/2012CN202557131U Automatic erasing device for blackboard
11/28/2012CN202557130U Dustproof blackboard eraser
11/28/2012CN202557129U Automatic dust-collecting blackboard eraser
11/28/2012CN202557128U Dust-absorbing blackboard eraser
11/28/2012CN202557127U A blackboard eraser
11/28/2012CN202557126U Integrated blackboard writing tool
11/28/2012CN202557125U Convenient blackboard eraser
11/28/2012CN202557124U Dustproof blackboard eraser
11/28/2012CN202557123U Blackboard eraser for writing for language teaching
11/28/2012CN202557122U Novel blackboard eraser
11/28/2012CN202557121U Glove type blackboard eraser
11/28/2012CN202557069U Integrated device of blackboard and blackboard eraser
11/28/2012CN202557064U Convenient blackboard
11/28/2012CN202557062U Movable blackboard
11/28/2012CN202557059U Improved movable blackboard
11/28/2012CN202557055U Convenience blackboard
11/21/2012CN202541145U Dust-absorption blackboard eraser
11/21/2012CN202541144U Blackboard eraser for primary students
11/21/2012CN202541143U Dust collection blackboard eraser
11/21/2012CN202541142U Dust-absorption blackboard eraser
11/21/2012CN202541141U Blackboard eraser
11/21/2012CN202541140U A dust-free motor-driven eraser
11/21/2012CN202541139U Environmentally-friendly dustproof blackboard eraser
11/21/2012CN202541138U Electric blackboard eraser
11/21/2012CN202541104U Environmentally-friendly and energy-saving blackboard
11/21/2012CN202541102U Blackboard with blackboard eraser
11/21/2012CN102785520A Blackboard eraser
11/21/2012CN102785519A Hanging sleeve type blackboard eraser
11/21/2012CN102785515A Automatic flushing blackboard
11/21/2012CN102785512A Dust-free environment-friendly combined multimedia teaching board
11/14/2012CN202528718U Dustless blackboard eraser
11/14/2012CN202528717U Modified blackboard eraser
11/14/2012CN202528716U Dust sucking device for blackboard
11/14/2012CN202528715U Dust-collection blackboard eraser
11/14/2012CN202528714U Novel dust collection blackboard eraser device
11/14/2012CN202528713U Blackboard eraser
11/14/2012CN202528712U Multi-functional blackboard eraser
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