| Patents for B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for (6,769) |
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| 06/06/1989 | US4835874 Driven marking system for creating a plurality of varied line designs |
| 06/06/1989 | US4835872 Automatic apparatus for drawing on and scoring of sheet material |
| 05/30/1989 | US4834334 Turn and tilt easel |
| 05/30/1989 | US4833791 Step layout device |
| 05/30/1989 | US4833785 Positioning systems |
| 05/24/1989 | CN2038059U Assemble drawing board |
| 05/24/1989 | CN2038058U Multi-function drawing board for plane geometry, solid geometry and axonometrical drawing |
| 05/24/1989 | CN2038057U Multipurpose ruler for pupil |
| 05/23/1989 | US4833490 Writing element with exchange mechanism |
| 05/23/1989 | US4832512 Plotting machine |
| 05/18/1989 | DE3737721A1 Liquid-crystal drawing board |
| 05/17/1989 | CN2037682U Multifunctional drawing rule |
| 05/17/1989 | CN2037681U Folding protractor type multifunction straightedge |
| 05/17/1989 | CN2037560U 多功能文具盒 Multifunction stationery |
| 05/10/1989 | EP0315417A2 Printer having identifiable interchangeable recording heads or pens |
| 05/10/1989 | CN2037317U Writting and painting board for child |
| 05/10/1989 | CN2037173U Health care reading and writting frame for schoolchild |
| 05/09/1989 | US4828497 Graphic art skill development puzzle kit |
| 05/03/1989 | CN2036906U Multipurpose drawing board for middle school student |
| 05/03/1989 | CN2036905U Multipurpose form board for mechanical drawing |
| 05/03/1989 | CN2036904U Multipurpose drawing ruler |
| 05/03/1989 | CN2036903U Multifunction divider calipers |
| 05/03/1989 | CN2036902U Four angle ruler for drafting |
| 05/03/1989 | CN2036901U Combined multipurpose instrument for nearsightedness prevention of student |
| 05/03/1989 | CN2036761U Drawing instrument for collar cutting out of open collar clothes |
| 05/03/1989 | CN1032642A Vernier type multipurpose drafting instrument |
| 05/02/1989 | US4827292 Skewed material advancing system |
| 04/26/1989 | CN2036496U Combined multifunction simple mapping apparatus |
| 04/26/1989 | CN2036495U Adjustable cross-rule |
| 04/26/1989 | CN2036494U Multipurpose combined subsidiary appliance for reading and writing |
| 04/26/1989 | CN2036493U Multifunction combined gauge rule |
| 04/26/1989 | CN2036492U Interesting multipurpose stationery rule for juvenile |
| 04/25/1989 | US4823475 Drafting device |
| 04/19/1989 | EP0311767A2 Electromechanical writing pen actuators |
| 04/19/1989 | CN2036115U Multifunctional drawing board |
| 04/19/1989 | CN2035987U Portable writing stand capable of preventing myopia |
| 04/18/1989 | US4823147 Graphic machine with continuous storing device |
| 04/12/1989 | CN2035715U Fluorescence tracing appliance |
| 04/12/1989 | CN2035582U Stationery box with electronic watch |
| 04/06/1989 | DE3731681A1 Drawing head mounting |
| 04/06/1989 | DE3731392A1 Writing unit for a drum-type or flat-bed plotter |
| 04/05/1989 | CN2035324U Drawing instrument from aviation picture |
| 04/05/1989 | CN2035323U Multi-purpose compass |
| 04/05/1989 | CN2035322U Multi-function drawing rule |
| 04/05/1989 | CN2035321U Multi-function drawing rule |
| 03/29/1989 | CN2034912U Standard mechanical-drawing drafter |
| 03/29/1989 | CN2034911U Ruler for centering arc |
| 03/29/1989 | CN2034910U Permanent copy book of model writing |
| 03/22/1989 | EP0307908A2 X-Y plotter |
| 03/22/1989 | EP0307624A1 Disposable stencil |
| 03/22/1989 | CN2034531U Standard templet for answering question quickly in test |
| 03/22/1989 | CN2034530U Multipurpose mapping instrument |
| 03/22/1989 | CN2034529U Multifunctional drawing instrument for teaching |
| 03/16/1989 | DE3729629A1 Writing or drawing board |
| 03/15/1989 | CN2034363U Apparatus for manufacturing printed circuit board directly with computer |
| 03/15/1989 | CN2034131U High-speed practising calligraphy board |
| 03/15/1989 | CN2034130U Direct high efficient drawing machine |
| 03/15/1989 | CN2034129U Multifunction blackboard plotting device |
| 03/15/1989 | CN2034128U Multifunction pen container |
| 03/15/1989 | CN2034127U Uniform meter |
| 03/15/1989 | CN2034126U Geometrical drawing plotter |
| 03/15/1989 | CN2034122U Healthy writing pen |
| 03/14/1989 | US4812858 Indexing mechanism |
| 03/08/1989 | CN2033758U Drawing instrument for engineering drawing |
| 03/08/1989 | CN2033757U Combination drawing plate |
| 03/08/1989 | CN2033756U Pen-and-ink writings simulating board for exercise |
| 03/08/1989 | CN2033755U Moving dawing rule with pulley |
| 03/08/1989 | CN2033754U Full plastic multi-lfunction plotting apparatus |
| 03/08/1989 | CN2033753U Electronic counder for correcting posture of learing |
| 03/08/1989 | CN2033626U Multu-purpose long rule rack for reading |
| 03/02/1989 | DE3727895A1 Ruler, especially parallel ruler with vertically adjustable carriage |
| 03/01/1989 | CN2033346U Designed die plate by hydraulic and pneumatic principle |
| 03/01/1989 | CN2033345U Parallel set rule with singl ruler |
| 03/01/1989 | CN1031350A Portable drawing machine with multiple functions |
| 02/28/1989 | US4809023 Automatic pencil device for automatic drafting and writing machines |
| 02/23/1989 | DE3726638A1 Round template system |
| 02/22/1989 | CN2032945U Evenly divided set square |
| 02/22/1989 | CN2032944U Nonius multipurpose mapper |
| 02/21/1989 | US4806953 Acoustic isolation timing belt pulley for drafting plotters |
| 02/21/1989 | CA1250140A1 Line drawing instrument |
| 02/15/1989 | CN2032704U Digital coodinatograph |
| 02/15/1989 | CN2032555U Universal projection solid mapper |
| 02/15/1989 | CN2032554U Multi-angle right-triangle |
| 02/15/1989 | CN2032553U Multipurpose geometry gauge |
| 02/08/1989 | CN2032149U Standard examination reply scribble appliance |
| 02/08/1989 | CN2032148U Z shape penholder |
| 02/01/1989 | CN2031767U 折叠式书写架 Folding writing shelf |
| 02/01/1989 | CN2031766U Vertical plane multipurpose ruler |
| 02/01/1989 | CN2031765U Pen grasper |
| 01/25/1989 | EP0300825A1 Position transducer for printer and plotter |
| 01/25/1989 | CN2031360U Measuring and drawing instrument for steel track fracture surface section |
| 01/25/1989 | CN2031359U Corresponding instrument for central angle and arc length |
| 01/25/1989 | CN2031358U Nearsight prevention simple frame for children reading and writing |
| 01/25/1989 | CN2031357U Multi-function drawing ruler |
| 01/25/1989 | CN2031356U Multi-purpose ruler for student |
| 01/25/1989 | CN2031352U Spring clipping type pen-shaped broad brush |
| 01/24/1989 | US4799317 Stencil device for post cards |
| 01/18/1989 | CN2030951U Multi-purpose template for mechanical drawing |
| 01/18/1989 | CN2030950U Baby drawing board |
| 01/18/1989 | CN2030949U Combined type protractor |