B43L 21 - Blackboard or slate-cleaning devices

Patents for B43L 21 - Blackboard or slate-cleaning devices (5,409)
06/2013
06/19/2013	CN203004849U Chalk-ash collection system
06/19/2013	CN203004848U Automatic dust collector for blackboard eraser
06/19/2013	CN203004847U Self-cleaning blackboard eraser
06/19/2013	CN203004846U Dust collection blackboard eraser
06/19/2013	CN203004845U Electric type blackboard cleaner
06/19/2013	CN203004844U Novel blackboard eraser
06/19/2013	CN203004843U Blackboard eraser
06/19/2013	CN203004842U Watering blackboard eraser
06/19/2013	CN203004841U Water-spraying dustproof blackboard eraser
06/19/2013	CN203004840U Dust collecting blackboard eraser
06/19/2013	CN203004839U Water-spraying blackboard eraser
06/19/2013	CN203004838U Water spray blackboard eraser
06/19/2013	CN203004837U 黑板擦 Eraser
06/19/2013	CN203004836U Blackboard eraser
06/19/2013	CN203004835U White board eraser with clock
06/19/2013	CN203004834U Board eraser adsorbing dust
06/19/2013	CN203004833U Labor-saving blackboard eraser
06/19/2013	CN203004832U Telescopic blackboard eraser
06/19/2013	CN203004831U Pressing adjusting mechanism of blackboard eraser device
06/19/2013	CN203004830U Sliding fit structure of blackboard eraser device
06/19/2013	CN203004829U Convenient blackboard eraser
06/19/2013	CN203004828U Three-sided blackboard eraser
06/19/2013	CN203004827U Blackboard eraser
06/19/2013	CN203004826U Push-pull blackboard eraser
06/19/2013	CN203004825U Blackboard eraser with dust collection box
06/19/2013	CN203004761U Novel reel type blackboard
06/19/2013	CN203004759U Blackboard preventing dust from splashing
06/19/2013	CN203004756U Blackboard device with automatic cleaning function
06/19/2013	CN203004754U Dust absorbing blackboard
06/19/2013	CN203004753U Dust-absorbing blackboard
06/19/2013	CN203004752U Quick-cleaning blackboard
06/19/2013	CN203004751U Full-automatic blackboard
06/19/2013	CN203004750U Dustproof blackboard
06/19/2013	CN103158408A Dust-absorbed blackboard eraser
06/18/2013	US8464390 Cleaning glove with agitating feature
06/12/2013	CN202986566U Small board eraser with box
06/12/2013	CN202986565U Labor-saving blackboard eraser and blackboard
06/12/2013	CN202986564U Dustproof blackboard brush
06/12/2013	CN202986563U Dust collection device for erasing blackboard
06/12/2013	CN202986562U Automatic dust-absorption blackboard eraser
06/12/2013	CN202986561U Blackboard brush
06/12/2013	CN202986560U Blackboard eraser with dust collection function
06/12/2013	CN202986559U Dust-free blackboard eraser
06/12/2013	CN202986558U Anti-chalk-dust-explosion blackboard eraser
06/12/2013	CN202986557U Dustproof blackboard eraser
06/12/2013	CN202986556U General board eraser for green board or white board
06/12/2013	CN202986555U Blackboard eraser
06/12/2013	CN202986554U Magnetic blackboard eraser with chalk holder
06/12/2013	CN202986553U Chalk brush
06/12/2013	CN202986552U Sliding blackboard eraser
06/12/2013	CN202986551U Belt blackboard dust collecting device
06/12/2013	CN202986550U Blackboard eraser
06/12/2013	CN202986549U Chalk eraser scraper blade
06/12/2013	CN202986548U Multi-purpose blackboard eraser with built-in laser emitter
06/12/2013	CN202986547U Blackboard eraser
06/12/2013	CN202986546U Convenient blackboard eraser
06/12/2013	CN202986518U Special blackboard capable of erasing characters automatically for school
06/12/2013	CN202986517U Rolling blackboard
06/12/2013	CN202986510U Blackboard
06/12/2013	CN202986509U Full-automatic dust collection blackboard
06/12/2013	CN202986505U Dust absorption type dust prevention blackboard
06/12/2013	CN202986502U Whiteboard with erasers
06/12/2013	CN103144476A Automatic dust collection type blackboard eraser
06/12/2013	CN103144475A Drum type blackboard eraser
06/12/2013	CN103144474A Semi-wet and semi-dry blackboard eraser
06/05/2013	CN202965729U Convenient blackboard eraser
06/05/2013	CN202965728U Convenient blackboard eraser
06/05/2013	CN202965727U Dust absorption blackboard eraser
06/05/2013	CN202965726U Dust absorption eraser
06/05/2013	CN202965725U Dust absorbing eraser
06/05/2013	CN202965724U Dust absorption black eraser
06/05/2013	CN202965723U Remote-control spraying-type automatic blackboard erasing machine
06/05/2013	CN202965722U Math teaching board
06/05/2013	CN202965721U Blackboard eraser
06/05/2013	CN202965720U Separating type blackboard eraser
06/05/2013	CN202965719U Novel chalk eraser
06/05/2013	CN202965718U Blackboard eraser capable of being replaced and washed
06/05/2013	CN103129271A Folding practical blackboard eraser
06/05/2013	CN103129270A Labor-saving blackboard eraser
05/2013
05/29/2013	CN202952736U Simple blackboard eraser capable of being worn on finger
05/29/2013	CN202952735U 可伸缩黑板擦 Scalable eraser
05/29/2013	CN202952732U Blackboard scriber in English language teaching
05/29/2013	CN202952719U Dust-free blackboard capable of automatically wiping
05/29/2013	CN202952717U Modified blackboard
05/29/2013	CN103121357A Blackboard eraser provided with magnetic block and telescopic handle
05/29/2013	CN103121356A Blackboard eraser provided with mirror
05/29/2013	CN103121355A Eraser
05/29/2013	CN103121354A Eraser
05/22/2013	CN202944103U Stretchable blackboard eraser
05/22/2013	CN202944102U Blackboard eraser with five wiping faces
05/22/2013	CN202944101U Dust absorption type blackboard eraser
05/22/2013	CN202944100U Multifunctional blackboard eraser
05/22/2013	CN202944099U Storage type blackboard eraser
05/22/2013	CN202944098U 黑板擦 Eraser
05/22/2013	CN202944090U Blackboard capable of scrubbing automatically
05/22/2013	CN202944089U Blackboard capable of automatic cleaning
05/22/2013	CN103112295A Blackboard eraser capable of absorbing dust
05/22/2013	CN103112294A Blackboard eraser
05/22/2013	CN103112293A Blackboard eraser with brush changeable
05/22/2013	CN103112284A Blackboard

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