| Patents for B43L 1 - Repeatedly-usable boards or tablets for writing or drawing (5,148) |
|---|
| 04/14/1988 | DE3633570A1 Device for graphical storing |
| 03/02/1988 | CN87203679U Blackboard for child |
| 03/02/1988 | CN85102015B Auto-erasing motor-driven blackboard |
| 02/23/1988 | US4727431 Use in conferences and meetings to scale down/copy characters and figures |
| 02/03/1988 | CN87207528U Magnetic writing apparatus |
| 02/03/1988 | CN87200486U Multi functional writing board |
| 02/02/1988 | US4722145 Advertising system |
| 01/26/1988 | CA1232008A1 Color changeable fabric |
| 01/19/1988 | US4720749 Electronic print board |
| 01/19/1988 | CA1231501A1 Article of wearing apparel with an erasable writing surface |
| 01/13/1988 | CN87201373U Sight protecting writing board |
| 12/23/1987 | CN87100578A Electromagnetic writing plate |
| 12/23/1987 | CN85204933U Strip type movable blackboard having auto-cleaning function |
| 12/16/1987 | CN86205606U Blackboard capable of changing face automatically and wiping original handwriting |
| 12/16/1987 | CN86103988A 磁性显示装置 Magnetic display device |
| 12/15/1987 | US4713698 Write-in electronic display recorder |
| 12/12/1987 | CN86210377U Multiple functional flexible blackboard |
| 12/02/1987 | CN87201232U Inserting bag type learning board for children |
| 12/02/1987 | CN87200804U Board for tracing characters |
| 11/11/1987 | CN86204954U Blackboard with movable board |
| 11/11/1987 | CN86202044U Multi-purpose blackboard of blackish green colour |
| 11/07/1987 | CN86210928U Blackboard which is automatically-erased during turning |
| 11/07/1987 | CN86206704U Calligraphy exercise imitation board |
| 11/04/1987 | CN87202270U Compositive blackborad |
| 10/31/1987 | CN86209165U Revolving blackboard |
| 10/31/1987 | CN86207531U Reelable blackboard |
| 10/14/1987 | CN86102246A Cirele-round self-erasing dust-free blackboard |
| 09/23/1987 | CN86209234U Electrically heated desk mat |
| 08/12/1987 | EP0231646A2 Electronic print board apparatus |
| 08/11/1987 | CA1225477A1 Eraser for electronic blackboard |
| 08/04/1987 | US4684099 Pivotally mounted scheduling boards |
| 07/29/1987 | CN86100309A Manufacture process for electric lighted blackboard |
| 07/28/1987 | CA1224865A1 Phosphorescent marking system |
| 07/22/1987 | CN86205294U Magnetic indicator |
| 07/08/1987 | CN86200341U Transmission belt-type blackboard |
| 07/01/1987 | EP0227115A1 Writing screen |
| 07/01/1987 | CN86204597U Multifunctional electrically driven winding blackboard for teaching |
| 06/24/1987 | CN86200659U Fivepurpose swing with a board |
| 06/02/1987 | US4670794 Electronic print board |
| 06/02/1987 | US4670751 Eraser for electronic blackboard |
| 05/19/1987 | US4667254 Electronic print board |
| 04/21/1987 | US4659619 Visual display; rotating color-coded electromagnets in hollow transparent filaments |
| 04/01/1987 | EP0216304A2 Display-reproducing apparatus |
| 04/01/1987 | CN85109739A Magnetic blackboard |
| 03/24/1987 | US4652239 Space planning system and method |
| 03/11/1987 | CN86104828A Movable black-board |
| 02/17/1987 | US4643684 An organic and inorganic thickener; toys, teaching equipment, writting boards, records |
| 02/11/1987 | CN86202524U Vertical magnetic writing plate |
| 01/14/1987 | CN86205825U Writing board without chalk powder |
| 01/06/1987 | CA1216257A1 Apparatus for storing felt pens for an electronic board |
| 12/31/1986 | CN86203174U Portable blackboard |
| 12/31/1986 | CN85205348U Folding blackboard |
| 12/30/1986 | US4631888 Device for holding a panel or other generally flat object on a wall |
| 12/09/1986 | US4627110 Article of wearing apparel with an erasable writing surface |
| 11/26/1986 | CN85205866U Dual-purpose plate for writing and warming |
| 11/04/1986 | CA1213637A1 Writing board |
| 09/17/1986 | CN86200774U Electrothermal writing board |
| 09/16/1986 | CA1211495A1 Electronic print board |
| 09/03/1986 | CN85105785A Dustless teaching display-tool with sticking plastic plate |
| 08/13/1986 | CN85204049U Glass-blackboard with coordinate |
| 07/23/1986 | EP0049251B1 Improvements relating to drawing apparatus |
| 07/23/1986 | CN85100923A Magnetic blackboard elestic blackboard and light-sensitive blackboard |
| 07/22/1986 | CA1208383A1 Color information input system for electronic blackboard |
| 07/16/1986 | CN85202691U Self-erasing ring shape blackboard |
| 06/10/1986 | CN85102015A Auto-erasing motor-driven blackboard |
| 05/20/1986 | US4590381 Phosphorescent marking system |
| 05/06/1986 | US4587568 Electronic print board |
| 04/23/1986 | EP0179042A1 Device for keeping a panel or other flat object affixed to a wall |
| 04/01/1986 | CA1202483A1 Display screens and the like |
| 03/18/1986 | US4576981 Copolyester, vinylidene chloride copolymer, polyester surface, drawing, light sensitive elements |
| 03/13/1986 | WO1986001517A1 Herpes virus specific immunological materials and methods |
| 03/05/1986 | EP0173326A2 An electronic print board |
| 02/26/1986 | EP0172471A2 Herpes virus specific immunological materials and methods |
| 02/26/1986 | CN85201241U Vertical blackboard without chalk dust |
| 01/30/1986 | WO1986000577A1 Color changeable fabric |
| 01/14/1986 | US4564078 Apparatus for storing felt pens for an electronic board |
| 01/08/1986 | EP0166792A1 Color changeable fabric |
| 12/11/1985 | EP0164085A2 An electronic copy board |
| 12/11/1985 | EP0164084A2 An electronic copy board |
| 09/17/1985 | US4541180 Method for creating and viewing a composite three-dimensional design |
| 09/17/1985 | CA1193433A1 Three-dimensional drawing tool |
| 09/10/1985 | CN85200080U Learning-board for children |
| 08/20/1985 | US4536428 Front and rear substrates, adhesives, dispersing liquid |
| 07/09/1985 | US4528237 Color changeable fabric containing micromagnets adhered to a substrate |
| 06/04/1985 | US4520584 Display screens and the like |
| 05/22/1985 | EP0142257A2 Article of wearing apparel with an erasable writing surface |
| 02/26/1985 | US4501931 Color information input system for electronic blackboard |
| 12/11/1984 | US4487586 Framed board with writing surface |
| 11/07/1984 | EP0124094A2 Adhesive |
| 10/03/1984 | EP0120031A1 Writing board and method for manufacturing thereof |
| 09/26/1984 | EP0119856A2 Electronic copy board |
| 07/25/1984 | EP0114105A2 Apparatus for storing felt pens for use with an electronic board |
| 07/25/1984 | EP0114093A2 An eraser for an electronic blackboard |
| 07/03/1984 | US4457723 Color changeable fabric |
| 06/26/1984 | US4456286 Apparatus for wall mounted presentation boards |
| 06/05/1984 | US4451985 Drawing apparatus |
| 05/30/1984 | EP0109565A2 Board for teaching purposes |
| 04/17/1984 | CA1165911A1 Magnetic display panel using reversal magnetism |
| 04/12/1984 | WO1984001328A1 Writing board and method for manufacturing thereof |
| 03/28/1984 | EP0103598A1 Erasure board with several writing fields |