| Patents for B43L 1 - Repeatedly-usable boards or tablets for writing or drawing (5,148) |
|---|
| 09/21/1994 | CN2177601Y Ash collecting type blackboard |
| 09/15/1994 | WO1994020310A1 Drawing device including a case with a transparent screen |
| 09/14/1994 | CN2176911Y Writing training board |
| 08/24/1994 | CN2175120Y Plate for exercising writing characters with rigid pen |
| 08/17/1994 | CN2174339Y Pencil box writing board with reading rack |
| 08/17/1994 | CN2174338Y Board for reading and writing |
| 08/10/1994 | CN2173710Y Myopia prevention writing board |
| 08/09/1994 | US5335942 Stylus for an erasable marker system |
| 08/03/1994 | CN2173169Y Double-side writing blackboard |
| 08/02/1994 | CA2044152C Three-dimensional drawing device |
| 07/27/1994 | CN2172721Y Automatic dustless blackboard device |
| 07/27/1994 | CN2172720Y Multi-functional folding blackboard for use in school and household |
| 07/27/1994 | CN2172719Y Board of tracing in black ink cover characters printed in red for calligraphy and painting |
| 07/13/1994 | CN2171501Y Practising writing and drawing picture mould with pen and with displaying sound |
| 07/13/1994 | CN2171496Y 黑板 Blackboard |
| 07/06/1994 | CN2170853Y Health-care writing board |
| 07/06/1994 | CN1025306C Magnetophoretic display panel |
| 06/28/1994 | US5324603 Sheet with pair of major surfaces; nonmagnetic matrix; plurality of columns of magnetic particles extending between surfaces |
| 06/28/1994 | US5324202 Luminescent display and copying apparatus and method for using same |
| 06/23/1994 | WO1994014148A1 An erasable product |
| 06/22/1994 | EP0602291A1 Stylus for an erasable marker system |
| 06/15/1994 | CN2168727Y Composite resin board for writing on both sides |
| 06/15/1994 | CA2111376A1 Stylus for an erasable marker system |
| 06/08/1994 | CN2167856Y High-efficient teaching stripe blackboard |
| 06/08/1994 | CN2167855Y Dustless writing and erasing device |
| 06/01/1994 | CN1024853C Electronic blackboard device and articles for writing thereof |
| 05/31/1994 | US5317340 Method and device for erasing and writing on magnetic recording media suitable for direct viewing |
| 05/25/1994 | CN2166011Y Magnetic blackboard capable of scribbling & cleaning wantonly |
| 05/25/1994 | CN2166010Y Writing & drawing board for children |
| 05/25/1994 | CN2166009Y Magic drawing board for children |
| 05/18/1994 | CN2165003Y Rise-and-fall blackboard |
| 05/18/1994 | CN2165002Y Paste oily surface teaching blackboard |
| 05/18/1994 | CN2165001Y Magnetic blackboard |
| 05/11/1994 | CN1086481A Self fading paper and cloth for colour painting and writing exercises |
| 05/04/1994 | CN2163745Y High-clarity magnetic blackboard without the chalk dust pollution |
| 05/04/1994 | CN2163744Y Multi-functional writing board |
| 05/04/1994 | CN2163743Y Demonstrating board for teaching |
| 04/27/1994 | CN2163077Y Multifunction lifting blackboard |
| 04/27/1994 | CN2163076Y Rotating self-cleaning blackboard |
| 04/27/1994 | CN2163075Y Multipurpose writing board |
| 04/27/1994 | CN2163074Y Message-leaving board |
| 04/27/1994 | CN2163060Y Transparent card and cooperative magnetic board for learning to write with a brush |
| 04/20/1994 | CN2162363Y 电子黑板 Electronic blackboard |
| 04/20/1994 | CN2162362Y Penmanship practising board for soft-pen with water |
| 04/20/1994 | CN2162361Y Copy board |
| 04/19/1994 | US5305114 Electronic blackboard apparatus |
| 04/06/1994 | CN2160548Y White paper board |
| 03/30/1994 | EP0588918A1 A label. |
| 03/30/1994 | CN2159882Y Colour magic picture board |
| 03/22/1994 | US5295837 Magnetic visual display |
| 03/18/1994 | CA2096754A1 Portable drawing surface with interchangeable components |
| 03/16/1994 | CN2158790Y Writing device with out dust |
| 03/02/1994 | CN2157872Y Repeatedly-usable textbook for writing with writing brush |
| 02/23/1994 | CN2157043Y Multifunctional myopia prevention writing board |
| 02/16/1994 | CN2156043Y High-effect magnetic erasing strip for magnetic writing board |
| 02/16/1994 | CN2156042Y Picture stick board |
| 02/15/1994 | US5287254 Illuminated writing table |
| 02/08/1994 | US5284445 Portable drawing surface with interchangeable components |
| 02/02/1994 | EP0580891A1 Display screen for magnetic image recording |
| 01/26/1994 | CN2154174Y Rolling blackboard with automatic eraser |
| 01/26/1994 | CN1023596C Luminous writing plate |
| 01/19/1994 | CN2153469Y Portable multipurpose teaching blackboard |
| 01/18/1994 | US5279039 Three-dimensional drawing device |
| 01/12/1994 | CN2152682Y Rotary blackboard |
| 01/12/1994 | CN2152681Y Rotary blackboard |
| 01/05/1994 | CN2151865Y Easy writing easy erasing magnetic stick writing board |
| 12/22/1993 | CN2150082Y Painting-pasted board |
| 12/22/1993 | CN1079694A New auto-erase blackboard |
| 12/01/1993 | EP0572031A1 Electronic board system |
| 12/01/1993 | CN1078943A Concave mould training board for handwriting |
| 11/24/1993 | CN1078688A Auxiliary operator for pen writing calligraphy |
| 11/23/1993 | US5263866 Game board apparatus |
| 11/17/1993 | CN2146374Y Hardpen calligraphy or painting copying board |
| 11/11/1993 | WO1993022148A1 Magnetic visual display |
| 11/03/1993 | CN2145118Y Magnetic writing apparatus |
| 11/03/1993 | CN2145117Y Multipurpose lining board for writing with water |
| 10/20/1993 | EP0566329A1 Method for forming an image on a magnetic composite medium and apparatus therefor |
| 10/20/1993 | CN2144058Y Blackboard capable of automatically rotating and erasing dust |
| 10/05/1993 | US5249969 Luminescent display device and method of making the same |
| 09/15/1993 | CN2142072Y Blackboard with staves for teaching |
| 09/08/1993 | CN2141770Y Circular band type teaching blackboard |
| 09/01/1993 | CN2141359Y Double-purpose blackboard |
| 08/19/1993 | WO1993015918A1 Thermographic drawing device |
| 08/18/1993 | EP0555982A1 A hand-writable liquid crystal board set |
| 08/18/1993 | CN2140304Y Blackboard |
| 08/18/1993 | CN1021806C Electrostatic blackboard dust collecting method and its equipment |
| 08/10/1993 | US5235363 Method and apparatus for interacting with a computer generated projected image |
| 08/05/1993 | WO1993014943A1 Luminescent display and copying apparatus and method for using same |
| 07/21/1993 | CN2138574Y Enamelled blackboard |
| 07/07/1993 | CN2137599Y Separated self-erasing blackboard without ash |
| 06/23/1993 | CN2136746Y Blackboard |
| 06/16/1993 | CN2136143Y Driving blackboard with cleaner |
| 06/16/1993 | CN2136142Y Magnet attracting resin blackboard |
| 06/09/1993 | CN2135471Y Magnetic force recording board |
| 05/26/1993 | CN2134294Y Dusteless blackboard |
| 05/26/1993 | CN2134087Y Magnetic stationery box |
| 05/25/1993 | US5212874 Three-dimensional drawing device |
| 05/23/1993 | CA2055997A1 Eduboard |
| 05/19/1993 | CN2133460Y Automatic rolling blackboard |
| 05/05/1993 | CN2131704Y Lighting board for copying copybook of calligraphy |