| Patents for B43L 1 - Repeatedly-usable boards or tablets for writing or drawing (5,148) |
|---|
| 09/30/2004 | US20040191753 Underwater writing tablet |
| 09/22/2004 | CN2642523Y Novel soft blackboard |
| 09/22/2004 | CN1530243A Magnetic displaying board |
| 09/08/2004 | CN2639014Y Remote-controlled lifting blackboard |
| 09/01/2004 | CN2637193Y Fully self-service rotary blackboard |
| 08/25/2004 | EP1450296A2 Determining the location of the tip of an electronic stylus |
| 08/25/2004 | CN2635384Y Electric dustless backboard |
| 08/25/2004 | CN2635383Y Self erasing blackboard |
| 08/25/2004 | CN2635382Y Inferior light polyethylene dustless blackboard |
| 08/19/2004 | US20040160429 Determining the location of the tip of an electronic stylus |
| 08/18/2004 | CN2633590Y Multifunction blackboard |
| 08/18/2004 | CN2633589Y Anti-shortsightedness color plate |
| 08/18/2004 | CN1521688A Determining the location of the tip of an electronic stylus |
| 08/17/2004 | CA2140811C Modularized visual training aid for classroom instruction |
| 08/11/2004 | CN1519213A Method for producing blackboard and whiteboard made from enamel in super strength, and glaze of enamel |
| 08/11/2004 | CN1161728C Magnet reversing turn display screen |
| 08/10/2004 | US6774891 Transcription system |
| 08/04/2004 | CN2629988Y 艺术书写板 Art Writing Pad |
| 08/04/2004 | CN1160205C Making process of dust-free blackboard |
| 07/28/2004 | CN1159162C Exercise board for drawing on it without paper and pen its making method |
| 07/28/2004 | CN1159161C Circulating blackboard without erasing it |
| 07/27/2004 | US6767591 Cating a first surface of a flexible base substrate with a radiation curable material that is dry erasable upon curing |
| 07/22/2004 | DE10300511A1 Writing dynamics detector and indicator, has permanent recorder with sensors for detecting writing facsimiles and/or writing or tapping dynamics |
| 07/21/2004 | EP1438632A2 Electronic writing and erasing pencil |
| 07/15/2004 | DE10260587A1 Flipchart is guided on fixed guide elements of stand legs, and has a fixing mechanism which is formed of a clamp |
| 07/14/2004 | CN2625161Y Electric controlled cycle type dust-free teaching board |
| 07/07/2004 | CN1509903A Rotary flexible blackboard |
| 07/06/2004 | US6760009 Coordinate position inputting/detecting device, a method for inputting/detecting the coordinate position, and a display board system |
| 07/01/2004 | WO2004054676A1 Message doll and message doll set |
| 06/30/2004 | CN2621938Y Environmental protection auto blackboard |
| 06/30/2004 | CN2621937Y Multi-color luminous writing board |
| 06/30/2004 | CN2621936Y Soft magnetic white board with placing rack |
| 06/29/2004 | US6756964 Magnetophoresis type display device and process of production of same |
| 06/23/2004 | CN1154688C 塑料黑板 Plastic blackboard |
| 06/22/2004 | US6753986 Image reading device and electronic whiteboard including the same |
| 06/17/2004 | US20040115610 Erasable graphic panel |
| 06/16/2004 | CN1504349A Erasable graphic panel |
| 06/15/2004 | CA2326482C Effector platform for performing actions over vertical surfaces |
| 06/10/2004 | US20040110032 the board accepts erasable writing, drawing or other markings, and to which magnets will adhere |
| 06/09/2004 | CN2619796Y Electric lift blackboard |
| 06/03/2004 | WO2004011278B1 Dry erase surface |
| 06/02/2004 | CN2618774Y Super thin type iron powder glass fiber reinforced plastic blackboard |
| 06/02/2004 | CN2618773Y Eraseless teaching board without dust |
| 05/27/2004 | WO2004043711A1 Writing boards |
| 05/26/2004 | CN2617599Y Automatic blackboard sponge |
| 05/26/2004 | CN2617596Y Artificial granitic glass fibre reniforced plastics blackboard |
| 05/19/2004 | CN1150095C Apparatus and method for automatically erasing blackboard |
| 05/18/2004 | US6736644 Audio and visual message center |
| 05/18/2004 | US6736429 Autograph ball |
| 05/13/2004 | WO2004021379A3 Method of making writable erasable articles and articles therefrom |
| 05/13/2004 | US20040091849 Writing boards |
| 05/13/2004 | US20040089411 Method of making a dry erasable substrate |
| 05/12/2004 | CN2615788Y Quality education box |
| 05/12/2004 | CN2614929Y Arc shape blackboard |
| 05/12/2004 | CN2614928Y 写字板 WordPad |
| 05/11/2004 | US6733298 Reversible colorful writing apparatus |
| 05/06/2004 | US20040085225 Methods and apparatus to monitor the inventory of a food storage unit |
| 04/29/2004 | US20040081844 Method of making erasable articles and articles therefrom |
| 04/29/2004 | DE202004001316U1 Flipchart for display of data is made out of cardboard and may be erected by folding flat blank and has triangular-section vertical column with sloping writing and display surface at top |
| 04/22/2004 | WO2004026593A3 Magnetic device which is used to produce a graphic display |
| 04/22/2004 | WO2004011278A3 Dry erase surface |
| 04/22/2004 | US20040077497 Dry erase surface |
| 04/22/2004 | US20040076460 Phosphorescent writing system |
| 04/21/2004 | CN2612545Y Magnetometric composition plate for teaching |
| 04/21/2004 | CN2612544Y 黑板 Blackboard |
| 04/20/2004 | US6722891 Magnetic drawing board apparatus |
| 04/15/2004 | WO2003067614A3 Self-adhesive magnet receptive surface covering |
| 04/14/2004 | CN2611177Y Multi-surface showing and movable black-board |
| 04/14/2004 | CN2611176Y Multi-functional dustless black-board |
| 04/14/2004 | CN2611175Y Rolling-up type black-board |
| 04/14/2004 | CN2611174Y Two surface turning-able and lifting/lowering type black-board |
| 04/07/2004 | CN2609777Y Automatic eraser |
| 04/07/2004 | CN2609772Y Dustless large teaching board and pen |
| 04/07/2004 | CN2609771Y Electrostatic dust-suction blackboard |
| 04/07/2004 | CN2609770Y Writing board |
| 04/01/2004 | WO2004027698A1 Electronic white board having electromagnetic sensing layer of conductor grid |
| 04/01/2004 | WO2004026593A2 Magnetic device which is used to produce a graphic display |
| 03/31/2004 | CN2608299Y Writing baord two halve opposite joint type frame section material |
| 03/31/2004 | CN2608298Y Writing board edge frame section bar |
| 03/25/2004 | WO2004016068A3 Illuminious writing board |
| 03/25/2004 | WO2003064769A3 Sheet for application of erasable print |
| 03/11/2004 | WO2004021379A2 Method of making writable erasable articles and articles therefrom |
| 03/11/2004 | WO2004020221A1 Method of making erasable articles and articles therefrom |
| 03/10/2004 | CN1141443C Cyclically used exercising board for calligraphy and its making method |
| 03/04/2004 | US20040041799 Electronic writing and erasing pencil |
| 03/03/2004 | CN2605130Y Net type dustfree blackboard |
| 02/26/2004 | WO2004016068A2 Illuminious writing board |
| 02/26/2004 | DE10320121A1 Schreibtafelverfahren und -vorrichtung Chalkboard method and apparatus |
| 02/25/2004 | CN2604329Y Blackboard |
| 02/25/2004 | CN1477162A Preparation method of blackboard paint |
| 02/10/2004 | US6690912 Audio and visual message center |
| 02/05/2004 | WO2004011278A2 Dry erase surface |
| 02/05/2004 | US20040021790 Method of and system for processing image information on writing surface including hand-written information |
| 02/04/2004 | CN2602445Y Multifunctional teaching stick |
| 01/27/2004 | US6682352 Folding writing board |
| 01/21/2004 | CN2600258Y Blackboard with small power dust cleaner |
| 01/21/2004 | CN2600257Y Rotation blackboard with chalk powder storing box |
| 01/15/2004 | WO2004005043A1 Section used to support different accessories |
| 01/14/2004 | CN2598758Y Luminous blackboard |
| 01/07/2004 | CN2597211Y Fully-automatic lift dust-absorbing blackboard |