| Patents for B43L 1 - Repeatedly-usable boards or tablets for writing or drawing (5,148) |
|---|
| 06/23/1999 | CN2325232Y Self-erasing writing board |
| 06/22/1999 | US5914745 Electronic white board apparatus |
| 06/17/1999 | WO1999029502A1 Electret film composition adapted for printing on computer printers and the like |
| 06/16/1999 | EP0921948A1 Methods for producing a type of print capable of being erased, selectively cleaned and plasticized |
| 06/16/1999 | CN2323979Y Magnetic writing appliance |
| 06/16/1999 | CN1043626C Visitors'board |
| 06/09/1999 | CN2322799Y 空气屏式教学黑板 Air-screen blackboard teaching |
| 06/08/1999 | US5910351 Multi-purpose hook |
| 06/02/1999 | DE19752482A1 Rotatable, extractable and clearable writing/information panel for communications, e.g. in motor vehicles |
| 05/27/1999 | DE19750925A1 Multifunction board for use with continuous recording material for making notes, recording, sketching and designing |
| 05/26/1999 | EP0785898B1 Dispensing assembly |
| 05/26/1999 | CN2320424Y 磁性黑板 Magnetic blackboard |
| 05/26/1999 | CN2320423Y Synchronous self-absorption dustless blackboard |
| 05/19/1999 | CN2319228Y 自动黑板 Automatic blackboard |
| 05/19/1999 | CN2319227Y Ash free blackboard |
| 05/18/1999 | US5904976 Polymeric film |
| 05/12/1999 | CN2318047Y Vertical rotary ash-free blackboard |
| 05/11/1999 | US5903252 Electronic whiteboard apparatus |
| 05/05/1999 | CN2317095Y Writing brush practising calligraphy board |
| 05/05/1999 | CN2317094Y Writing board with conceal hanger |
| 05/04/1999 | US5900943 Page identification by detection of optical characteristics |
| 04/28/1999 | CN2316144Y Dust-free writing board |
| 04/28/1999 | CN2316143Y Closed dust-collecting lifting blackboard |
| 04/21/1999 | CN2314949Y Automatic erasing dust-free black board |
| 04/14/1999 | CN2313756Y Cyclic blackboard |
| 03/24/1999 | CN2311370Y Repeatedly-usable board for writing educational appliance |
| 03/17/1999 | CN1210700A Board for education |
| 03/16/1999 | CA2093617C Hand-writable liquid crystal board set |
| 03/11/1999 | WO1999011473A1 Display system |
| 03/11/1999 | CA2269530A1 Display system |
| 03/04/1999 | WO1999010800A1 Page identification by detection of optical characteristics |
| 03/03/1999 | CN2309235Y Curved surface blackboard |
| 02/25/1999 | DE19837232A1 Writing surface giving permanent record but easily erasable |
| 02/17/1999 | CN2307684Y Blackboard without chalk dust |
| 02/11/1999 | WO1999005939A1 Cleaning board |
| 02/09/1999 | US5867914 Drawing device with multimedia enhancement |
| 02/03/1999 | CN2306125Y Rotary automatic dust-erasing teaching blackboard |
| 02/03/1999 | CN2306124Y 教学板 Teaching board |
| 01/27/1999 | CN2305295Y Blackboard for writing capable of circulate rolling |
| 01/20/1999 | CN1205278A Method for preparing wall type paint film-less blackboard |
| 01/19/1999 | US5860235 Erasable Product |
| 01/06/1999 | CN2302898Y Repeatedly usable board or wood tray for writing or painting having properties of Xuan-paper |
| 01/05/1999 | US5855083 Erasable sign |
| 12/30/1998 | WO1998058565A1 Ascendable blackboard |
| 12/30/1998 | CN2302134Y 电动无尘黑板 Electric clean the blackboard |
| 12/23/1998 | CN2301329Y 多功能便携式黑板 Multifunction portable blackboard |
| 12/16/1998 | CN2300519Y Convenient soft blackboard |
| 12/16/1998 | CN2300518Y White writing-board |
| 12/16/1998 | CN1201738A Endless band type automatic dustless blackboard |
| 12/09/1998 | CN2299721Y Circulating erasion-free dustless blackboard |
| 12/08/1998 | US5846630 Magnetic migration display panel |
| 12/02/1998 | CN2298939Y Combined blackboard for family teaching |
| 12/01/1998 | CA2072964C Magnetic visual display |
| 11/25/1998 | CN2298142Y 电动黑板 Electric blackboard |
| 11/25/1998 | CN2298141Y Turnover blackboard |
| 11/04/1998 | CN2296275Y Glass fiber reinforced plastic magnetic black, white board |
| 11/04/1998 | CN2296274Y Highly clear magnetic writing board |
| 10/28/1998 | CN2295607Y Stationery with erasable board |
| 10/27/1998 | US5827072 Graphic, sports-related instruction board |
| 10/13/1998 | US5820385 Magnetic display apparatus |
| 10/08/1998 | WO1998043826A1 Greeting card |
| 10/07/1998 | CN2293457Y Special glass board for practising painting & calligraphy of hard & soft-tipped writing & drawing instruments |
| 10/07/1998 | CN2293456Y Drawing board for pupil |
| 09/16/1998 | CN2291311Y Repeatedly-usable blackboard |
| 09/16/1998 | CN2291310Y Writing whiteboard capable of electric erasing |
| 09/02/1998 | CN2289694Y 动态黑板 Dynamic blackboard |
| 09/02/1998 | CN2289693Y Blackboard with multiple page turning |
| 08/26/1998 | CN2288849Y Crawler-type blackboard |
| 08/19/1998 | EP0726847B1 Polymeric film |
| 08/19/1998 | CN2288081Y Teaching writing blackboard without generating dust |
| 08/19/1998 | CN2288080Y Annulus-type multifunction liquid writing blackboard and special writing pen |
| 08/12/1998 | CN2287574Y Multifunctional study board for children |
| 08/11/1998 | US5791910 Reusable writing board having single polyester overlay sheet |
| 07/28/1998 | US5786838 Self-erasing thermochromic writing board and system |
| 07/22/1998 | CN2286456Y Clean type no chalk black board writing equipment |
| 07/15/1998 | EP0853304A1 Planning system |
| 07/07/1998 | US5775919 Combination bulletin/write board |
| 07/07/1998 | US5775914 Drawing apparatus |
| 07/01/1998 | CN1186027A Distributing composition for magnetic display |
| 06/17/1998 | EP0847876A1 Dispersion composition for magnetic display |
| 05/20/1998 | CN2281901Y Dust-proof rolling curtain blackboard |
| 05/19/1998 | US5752837 Tool kit for facilitators and trainers |
| 05/13/1998 | CN2281275Y Blackboard with invisuable coordinate |
| 05/06/1998 | CN1180882A Magnetic moving display board |
| 03/17/1998 | US5727952 Edge-encapsulated writing board |
| 03/11/1998 | CN1175753A Magnetic display board |
| 03/11/1998 | CN1175509A Dust-proof self-erasing blackboard |
| 03/05/1998 | WO1998008689A1 Methods for producing a type of print capable of being erased, selectively cleaned and plasticized |
| 03/05/1998 | CA2264897A1 Methods for producing a type of print capable of being erased, selectively cleaned and plasticized |
| 02/25/1998 | CN1174132A Multifunctional drafting paper |
| 02/18/1998 | CN1173432A Memory writing learning board by means of blank space contrast |
| 02/04/1998 | EP0822533A2 Magnetic display panel and method of making a magnetic display panel |
| 01/28/1998 | EP0820877A2 Magnetic migration display panel |
| 01/28/1998 | CN2273254Y Inorganic blackboard capable of rolling |
| 01/14/1998 | EP0818767A1 Magnetic head for magnetic display |
| 01/14/1998 | CN2272373Y Multi-purpose two-side board for study |
| 01/08/1998 | WO1998000616A1 Interior decorating material |
| 12/31/1997 | CN2271445Y Dustless writing training aid |
| 12/03/1997 | CN2269619Y Rolling-up type writing and demonstrating board |
| 12/03/1997 | CN2269316Y Full automatic dustless blackboard erasor |