| Patents for B43K 27 - Multiple-point writing implements, e.g. multicolour; Combinations of writing implements (2,153) |
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| 12/13/1990 | DE3918373A1 Two-colour writing device - incorporates absorbent rods side-by-side connected to separate ink containers |
| 12/11/1990 | US4976561 Writing tools |
| 11/28/1990 | EP0398936A1 Appliance for storing and applying a liquid |
| 11/21/1990 | CN2065984U Accuracy colour-distinguishing device for multi-colour pen |
| 11/14/1990 | CN2065558U Multi-colour pen |
| 11/07/1990 | EP0395973A1 Writing instrument |
| 11/07/1990 | CN2065148U Multicolour porous ball-point pen |
| 11/06/1990 | US4968167 Combined writing tool |
| 10/17/1990 | CN2063881U Parallel device of tracing pen |
| 09/26/1990 | CN2062685U Double-purpose pen as both fountain pen and pencil |
| 08/29/1990 | EP0384452A2 Multiple colour writing instrument |
| 08/29/1990 | CN2061125U Multicolour movable watercolour pen |
| 08/22/1990 | EP0322550B1 Writing instrument with two ball point units |
| 08/22/1990 | CN2060730U Multi-purpose writing appliance with pens |
| 08/14/1990 | US4948285 Ball point pen with two cartridges |
| 07/25/1990 | EP0378724A1 A combined writing tool |
| 06/13/1990 | CN1042869A Multi color fountain pen |
| 05/23/1990 | EP0369995A2 Dual refill writing utensil |
| 05/23/1990 | CN1042329A Double-purpose (red and blue) pen |
| 05/16/1990 | CN2057146U Robot-type three-colour ball pen |
| 04/04/1990 | CN2055447U Refill and lead type three-use (fountain pen ball-point pen and pencil) pen |
| 03/14/1990 | CN2054402U Multi-functional writting and drawing pen |
| 03/07/1990 | CN2053983U Multifunction pen |
| 02/28/1990 | CN1039997A Dual purpose pen with controllable ink |
| 02/21/1990 | CN2053146U Open and close device for ink intake of pen tip |
| 02/20/1990 | US4902151 Writing instrument with plural elements |
| 02/14/1990 | CN2052721U Multi-refil writing tool |
| 02/07/1990 | CN2052352U Multifunctional combined pen |
| 02/07/1990 | CN2052351U Multipurpose combined pen |
| 01/31/1990 | CN1006618B Multicolored bundled felt-tip pen |
| 01/17/1990 | CN2051160U Combined pen |
| 01/10/1990 | CN2050800U Seven-colour pen |
| 01/03/1990 | CN2050380U Pearl fountain pen |
| 12/20/1989 | CN2049602U Dual-purpose propelling pencil |
| 10/18/1989 | CN2046079U Dual purpose writing/correcting pen |
| 10/11/1989 | CN1036170A Device for storing and dispensing liquid |
| 10/10/1989 | US4872774 Instrument for writing and drawing |
| 09/20/1989 | CN2044549U Multi-colour ball-pen |
| 08/10/1989 | WO1989007053A1 Appliance for storing and applying a liquid |
| 08/09/1989 | CN2042418U Colour distinguishing device for multi-colour pen |
| 08/09/1989 | CN2042414U Multi-purpose pen |
| 07/26/1989 | CN2041626U Universal long life ball-pen |
| 07/20/1989 | DE3800558A1 Manual writing instrument |
| 07/19/1989 | EP0324321A2 Instrument for writing and drawing |
| 07/05/1989 | EP0322550A1 Writing instrument with two ball point units |
| 06/27/1989 | CA1256403A1 Writing device with multiple writing element |
| 06/07/1989 | CN2038843U Multipipe union ball-point pen |
| 05/31/1989 | CN2038451U A row of pens to write 5 or 6 lines of music stares simultaneously |
| 05/24/1989 | CN2038054U Large capacity multifunctional double head fountain-pen |
| 05/10/1989 | CN2037315U Dual (multi) point ball-point pen refill |
| 05/10/1989 | CN2037314U Big capacity back absorbing fountain pen |
| 05/02/1989 | US4826338 Multi-tip pen and holder |
| 04/12/1989 | CN2035710U Writing appliance with erasing pen |
| 03/29/1989 | CN2034909U Multi-purpose pen |
| 03/28/1989 | US4815212 Multiple line drawing instrument |
| 03/23/1989 | DE3830247A1 Writing implement |
| 02/15/1989 | CN2032549U Multipurpose pen |
| 02/15/1989 | CN2032547U Thumb-operated double-colour ball-pen |
| 01/25/1989 | CN2031352U Spring clipping type pen-shaped broad brush |
| 01/11/1989 | CN2030548U Corrugated three-colour pen |
| 01/04/1989 | CN1030048A Multi-purpose pen |
| 01/03/1989 | US4795156 Square bingo dobber apparatus |
| 12/28/1988 | EP0296607A1 Multifunctional pen |
| 11/22/1988 | US4786449 Casting temperature controlled small amounts of various colors of molten crayon materials into the same mold |
| 10/19/1988 | CN87217129U Multi-colour pen with craft pen-holder |
| 09/13/1988 | US4770557 Edge marking of sheets |
| 08/31/1988 | CN87103509A 彩色笔 Color pen |
| 08/24/1988 | CN87204678U Stiff and flexible brush |
| 08/17/1988 | CN87107887A Multicolored bundled felt-tip pen |
| 07/27/1988 | CN87215846U Combined writing brush |
| 06/29/1988 | CN87201646U 组合铅笔 Combination pencil |
| 06/21/1988 | US4752146 Coloring crayons |
| 05/25/1988 | CN87206447U Writing brush with mixed colours |
| 05/04/1988 | CN87201344U Multifunctional fountain pen with special cover |
| 04/19/1988 | US4738558 Writting tool |
| 04/19/1988 | US4738557 Writing device with multiple writing elements |
| 03/09/1988 | CN87210238U Bell and spigot joint pencil |
| 03/03/1988 | DE3629899A1 Fountain pen with ball-point attachment |
| 03/02/1988 | EP0257883A1 Dual refill writing utensil |
| 02/24/1988 | CN87204828U Two colour fountain pen |
| 02/24/1988 | CN86210972U New ball-point pencil |
| 02/24/1988 | CN86108773A Fountain pen with ball tip |
| 02/10/1988 | CN86202424U H-b drawing pencil-exchanging unit |
| 02/03/1988 | CN87209164U Multiple colour pen for calligraphy and drawing |
| 01/13/1988 | CN86104645A Clean rip fountain pen with high capacity |
| 12/17/1987 | DE3619684A1 Hand-held writing instrument |
| 12/16/1987 | CN86103834A Easy outflow colouring pen |
| 10/27/1987 | US4702633 Multicolor writing implement |
| 10/13/1987 | US4699535 Writing implement for calligraphy and method of using same |
| 10/06/1987 | CA1227769A1 Multi-combination writing instrument |
| 08/26/1987 | CN86204802U Clean head maintainable large capacity fountain pen |
| 08/12/1987 | EP0231521A1 Writing tool |
| 08/11/1987 | US4685820 Applicator device |
| 07/29/1987 | CN86203351U Combinations of ball-point pens for drawing staves |
| 07/21/1987 | US4681471 Kit comprising multicolored fluid dispenser markers together with eradicating fluid dispenser, stamps and stamp pad |
| 06/10/1987 | CN86105897A Multi-use iridium-, ball-point pen with compass and illumination |
| 05/20/1987 | CN86205419U Pencil for carpenter |
| 05/20/1987 | CN86205038U Twelve-color automatic pen |
| 04/01/1987 | EP0216438A1 Writing instrument with multiple writing elments |
| 03/11/1987 | CN86203047U Combination colour pen |