| Patents for B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for (6,769) |
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| 02/26/1987 | DE3614887C1 Drawing head |
| 02/24/1987 | US4646109 Automatic drafting machine having air blower means for holding paper down |
| 02/24/1987 | US4646107 XY plotter apparatus |
| 02/19/1987 | DE3625070A1 XY recorder with a transport apparatus |
| 02/18/1987 | CN86205882U Plastic drawing board |
| 02/18/1987 | CN86203692U Number axis drawing and teaching board |
| 02/18/1987 | CN86202640U Multipurpose drawing template |
| 02/18/1987 | CN86202604U Practical scale |
| 02/17/1987 | US4644367 Recording pen apparatus |
| 02/17/1987 | CA1218045A1 Graphic recording system |
| 02/11/1987 | CN86205283U Medical drawing plate |
| 02/11/1987 | CN86205049U Fax plate for writing chinese character |
| 02/11/1987 | CN86202473U Multipurpose triangular ruler |
| 02/11/1987 | CN86202327U Multifunctional plotting instrument |
| 02/11/1987 | CN86100727A Arithemetic ruler for primary school |
| 02/10/1987 | US4642779 Writing-plotting apparatus with keyboard |
| 02/05/1987 | DE3527072A1 Drawing template |
| 02/04/1987 | CN86203323U Grasping pen unit for writing |
| 02/04/1987 | CN86200803U Copybook |
| 02/03/1987 | US4640222 Marking apparatus |
| 01/31/1987 | CN86100343A Multifunction angle square and compasses |
| 01/29/1987 | DE3617075A1 Method for designing on a drawing board and device for carrying out the method |
| 01/28/1987 | CN86200253U Pen about to paint dotted line |
| 01/28/1987 | CN85204750U Multifunction implement for measuring and drawing t |
| 01/28/1987 | CN85204534U Model board for the student |
| 01/28/1987 | CN85105912A Writing exerciser |
| 01/27/1987 | US4638569 Business form design aid |
| 01/20/1987 | EP0126742A4 Inking system for producing circuit patterns. |
| 01/10/1987 | CN85101255A Drawing set square |
| 01/08/1987 | DE3614330A1 High-speed drawing machine for producing technical drawings |
| 01/07/1987 | CN85205416U Multifunctional pen compass |
| 12/31/1986 | CN85205178U Multi-angular square |
| 12/24/1986 | CN86204266U Holding cap of writing brush for writing position |
| 12/24/1986 | CN86200017U Multifunctional drawing instrument |
| 12/24/1986 | CN85105125A Multi-usage curve plotter for geometry |
| 12/23/1986 | US4630758 Liquid tank |
| 12/17/1986 | CN86201556U Slideway type drawing instrument |
| 12/16/1986 | US4630071 XY recorder |
| 12/16/1986 | US4628610 Adjustable radial curve radius setting scale |
| 12/09/1986 | US4628326 Apparatus for preventing drying-up of drawing needle pens |
| 12/09/1986 | US4627748 Writing-plotting apparatus with keyboard |
| 12/03/1986 | CN85104485A 绘图板系统 Drawing board system |
| 12/02/1986 | US4625410 Computer-aided drawing or engraving device |
| 11/19/1986 | CN86102017A Writing medium control system |
| 11/19/1986 | CN85204535U Template for technical drawing |
| 11/18/1986 | US4622755 Parallel straightedge |
| 11/18/1986 | CA1214145A1 Method of driving pen recorders |
| 11/18/1986 | CA1214144A1 Multi-color pen recording device |
| 11/12/1986 | CN86103947A Miniature multifunction drawing board |
| 11/11/1986 | US4621429 For plotting the tracking of a wheeled vehicle |
| 11/11/1986 | US4621428 Pen tip cleaning assembly of plotter |
| 11/05/1986 | EP0199777A1 Stencil for digitalised pictures |
| 10/22/1986 | CN85205741U Multifunctional triangle ruler |
| 10/01/1986 | CN86201581U Drawing set square with variable scale |
| 10/01/1986 | CN86102282A Pen control circuit |
| 09/24/1986 | CN85202736U Rulers with writing appliances |
| 09/24/1986 | CN85202568U Protractor combining with ruler |
| 09/17/1986 | CN86202469U Multifunctional straightedge |
| 09/16/1986 | CA1211495A1 Electronic print board |
| 09/10/1986 | CN85203090U Graphic panel for drawing diagram of hydraulic, pneumatic and lubricant system |
| 09/10/1986 | CN85102750A Arc length meter |
| 09/10/1986 | CN85102740A Line drawing ruler |
| 09/09/1986 | US4611215 Pen-recording apparatus with multi-station pen-holding head |
| 09/03/1986 | CN85203128U Special set square for drawing space diagram |
| 09/03/1986 | CN85107564A Stereoplotter with arbitrarily projective directions |
| 09/02/1986 | US4609918 Graph-drawing machine |
| 08/27/1986 | CN85108695A Spring fitting device |
| 08/26/1986 | US4608557 Graph-drawing machine |
| 08/20/1986 | EP0191222A2 XY recorder |
| 08/20/1986 | CN85201416U Multipurpose quick drawing template for mathematics learned in middle school |
| 08/19/1986 | US4607265 Pen-recording apparatus |
| 08/19/1986 | US4607263 Pen type plotting apparatus having automatic rewriting control |
| 08/13/1986 | EP0190445A1 Drafting head |
| 08/13/1986 | CN85204441U Multipurpose writting auxiliary board |
| 08/13/1986 | CN85203515U Multifunction ruler for middle school students |
| 08/12/1986 | US4605331 Pressurized writing device with needle weight having valve means |
| 08/06/1986 | EP0189904A1 Drafting table with plotter |
| 08/06/1986 | CN85205030U Centripetal alignment unit |
| 07/30/1986 | CN85203682U Multipurpose scale |
| 07/22/1986 | US4601108 Spacer device |
| 07/22/1986 | US4601107 Scale balancing device in universal parallel ruler device |
| 07/15/1986 | US4600083 Positioning systems |
| 07/15/1986 | US4599802 Draftsman's dimensional divider |
| 07/15/1986 | US4599799 Electric stippler with lobed cam-disk drive |
| 07/09/1986 | CN85201456U 万能绘图仪 Universal plotter |
| 07/08/1986 | US4598482 Rafter cutting template and tape |
| 07/02/1986 | CN85106870A Automatic drawing method for the three dimensional stereo-projection |
| 07/02/1986 | CA1206743A Pencil device for plotting machine |
| 07/01/1986 | US4598298 Plotter having automatic sheet feeder |
| 06/25/1986 | EP0185396A2 Security document incorporating a security thread, and process for manufacturing and checking the authenticity of the security document |
| 06/17/1986 | US4594792 Drawing apparatus |
| 06/11/1986 | CN85201445U Multipurpose triangle |
| 06/11/1986 | CN85200966U Graduated curves |
| 06/03/1986 | CA1205569A1 Inking system for producing circuit patterns |
| 05/28/1986 | CN85202916U Special purpose handwriting board for following the character track |
| 05/27/1986 | CA1204930A1 Combination layout tool and square |
| 05/21/1986 | CN85203764U Template with surface roughness symbol |
| 05/20/1986 | US4589210 Method and means for centerless circle construction |
| 05/14/1986 | CN85202294U Information processing flow chart symble templet |
| 05/14/1986 | CN85202234U Perspective drawing device |