| Patents for B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for (6,769) |
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| 03/10/1999 | CN1210079A Method and device for setting focus curve instrument |
| 03/09/1999 | US5878659 Template for marking a golf ball |
| 02/24/1999 | CN2308515Y Multifunctional roller fast plotting instrument |
| 02/09/1999 | US5868507 Plotter having sprockets for driving sheets relative to a tool carriage and a fixed sheet support extending between the sprockets |
| 02/09/1999 | US5867914 Drawing device with multimedia enhancement |
| 01/20/1999 | CN2304538Y Portable, foldable and angle adjustable reading shelf against myopia |
| 01/13/1999 | CN1041611C Vernier type multipurpose draught instrument |
| 12/30/1998 | CN2302137Y Enlarging plotting instrument |
| 12/23/1998 | CN1202429A Two-dimensional drawing method for perspective drawing |
| 12/22/1998 | US5852293 Raster data drawing apparatus for correcting image starting position |
| 12/16/1998 | CN2300524Y Multi-function drawing rule for student |
| 12/09/1998 | EP0689934B1 Form plate making apparatus for screen printing |
| 12/09/1998 | CN2299724Y Drawing instrument for use on blackboard |
| 12/09/1998 | CN2299722Y Circular curve-drawing instrument |
| 12/08/1998 | US5845409 Drawing board |
| 12/02/1998 | EP0881820A2 Flat bed raster drawing machine |
| 12/02/1998 | EP0881084A2 Device for marking |
| 11/30/1998 | CA2231972A1 Flat bed raster drawing machine |
| 11/04/1998 | CN2296277Y General point and line support for drawing tools |
| 10/14/1998 | EP0871016A1 A plotter having driving sprockets and a fixed sheet support extending between the sprockets |
| 10/13/1998 | US5821981 Magnetically preloaded air bearing motion system for an imaging device |
| 10/07/1998 | CN1194912A Typewriter for printing staff |
| 09/30/1998 | CN2292684Y Drawing templet for middle school's physics and chemistry |
| 09/22/1998 | US5812892 Multi-beam image forming system |
| 09/16/1998 | EP0813477A4 Improved instruments for drawing circles |
| 09/16/1998 | CN2291315Y Standard higher education examination questions answering board |
| 09/16/1998 | CN2291314Y Geometric figure drawing instrument |
| 09/09/1998 | CN2290484Y Enclosed bill anti-forge writing device |
| 09/09/1998 | CN2290483Y Plotting instrument |
| 09/01/1998 | US5799402 Portable device for removably positioning and resetting vanishing points of perspective drawings |
| 08/26/1998 | CN2288852Y Special-purpose blotting out templet for standard answer sheet |
| 08/19/1998 | CN2288084Y Universal pantographic scale |
| 07/29/1998 | CN2286680Y Auxiliary card for standard answering of examination question |
| 07/29/1998 | CN2286679Y Multi-purpose drawing board |
| 07/28/1998 | US5785528 Educational kit |
| 07/21/1998 | CA2007243C Writing instrument |
| 07/07/1998 | US5778277 Tilted scan rail |
| 06/30/1998 | US5772147 Apparatus for performing a work operation on sheet material and a sheet material feed mechanism therefor |
| 06/23/1998 | US5768789 Cable support device |
| 06/10/1998 | CN2283470Y Student sitting posture correction appliance |
| 06/10/1998 | CN2283400Y Body support for limiting reading and writing posture |
| 06/04/1998 | DE19649915A1 Template for drawing circles and arcs |
| 05/20/1998 | EP0842056A1 Line marking device |
| 05/12/1998 | US5751477 Transferring device |
| 05/06/1998 | CN2280628Y Arc fragmenting plate |
| 04/29/1998 | CN1180332A Stencil for making drawings with obtention of virtual-depth effect and method for using it |
| 04/28/1998 | US5745137 Continuous refill of spring bag reservoir in an ink-jet swath printer/plotter |
| 04/22/1998 | CN1038161C Enlargement method of characters or pictures by sample function curves |
| 04/04/1998 | CA2187111A1 Multi-purpose measuring and drawing instrument |
| 03/18/1998 | CN2276420Y Multipurpose drawing instrument combined with ruler and half-round protracter |
| 02/17/1998 | US5718053 Stationary perspective device |
| 02/11/1998 | CN2274139Y High-efficiency drawing device |
| 02/04/1998 | CN2273656Y Pantographic instrument for enlarging or diminishing |
| 02/04/1998 | CN2273655Y 直角坐标绘图板 Cartesian coordinates to the drawing board |
| 01/28/1998 | CN1171329A Chemical method and apparatus for processing drafting paper without tracing |
| 01/22/1998 | DE19628490A1 Set square with movable protractor and detachable plate |
| 01/21/1998 | CN2272821Y Multifunctional chess manual drawing device |
| 01/20/1998 | CA2111117C Spatial measurement recovery system |
| 01/07/1998 | CN1169699A Improved instruments for drawing circles |
| 12/31/1997 | CN2271448Y Double-running rule pen |
| 12/29/1997 | EP0814323A1 Cable support device |
| 12/29/1997 | EP0813477A1 Improved instruments for drawing circles |
| 12/24/1997 | CN2271156Y Standardized examination writing answer plate |
| 12/24/1997 | CN2271155Y Copy amplifying apparatus for character and figure |
| 12/23/1997 | US5699622 Line marking device |
| 12/17/1997 | CN2270637Y Hard-tipped pen handwriting corrective induced templet |
| 12/17/1997 | CN2270636Y Multipurpose drawing rule |
| 12/03/1997 | CN2269319Y Multi functional gauge and angle square |
| 12/03/1997 | CN2269118Y Protective device for eyes and spline |
| 11/26/1997 | CN2268637Y Curve drawing template |
| 11/19/1997 | CN2267952Y Multi-function amusing triangle |
| 11/18/1997 | US5687646 Method of producing stencils for use in silk-screen printing |
| 11/18/1997 | US5687488 Gauge for preparation of drawings with virtual deepness effect achievement and method for using thereof |
| 11/12/1997 | CN2267166Y Multi-purpose angle ruler |
| 11/05/1997 | CN2266519Y Hollow rail guiding copybook for calligraphy |
| 10/22/1997 | EP0801605A1 A stencil for making drawings with obtention of a virtual-depth effect and a method for using it |
| 10/22/1997 | CN2265304Y Universal drawing and caculating instrument |
| 10/22/1997 | CN2265303Y Multi-purpose drawing instrument |
| 10/15/1997 | CN2264676Y Multi-functional drawing instrument |
| 10/07/1997 | US5673492 Perspective drawing alignment apparatus |
| 10/01/1997 | CN2263590Y Multifunction drawing instrument |
| 09/24/1997 | CN2263009Y Rule for drawing in perspective |
| 09/24/1997 | CN2263008Y Multipurpose drawing rule |
| 09/10/1997 | CN2261942Y 绘图板 Drawing board |
| 09/03/1997 | CN2261346Y 多功能文具 Multifunction Stationery |
| 09/02/1997 | US5664251 Method of making an aperture plate for a multibeam pattern drawing apparatus |
| 08/09/1997 | CA2196716A1 Drawing device with multimedia enhancement |
| 08/06/1997 | CN2258812Y Multi-line marking-out device |
| 07/29/1997 | US5651184 Circumscribing apparatus |
| 07/16/1997 | CN1154303A Appliance for exercising to write Chinese characters |
| 07/15/1997 | US5647135 For rapid measurement by a user of diagrams/drawings on a surface |
| 06/05/1997 | DE19603372C1 Device for transferring outlines of two or three-dimensional originals to writable medium or into computer |
| 06/04/1997 | CN2255367Y Standard filling-daubing mould plate for microcomputer question-read-answer card |
| 05/27/1997 | US5632544 Optical apparatus |
| 05/27/1997 | US5632455 Apparatus for working on sheet material and having friction hub |
| 05/27/1997 | US5632094 Articulated drafting device for drawing perspectives |
| 05/13/1997 | US5628118 Mini-drafting machine |
| 04/23/1997 | CN2252718Y Standard test paper pattern plate |
| 04/09/1997 | CN2251496Y Coordinate type multipurpose drawing instrument |
| 04/08/1997 | US5619415 Method of drawing a cutting area |