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  • CPC
  • B43L13/16
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B43Writing accessories B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING B43L13/00Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for

Current Industry

B43L13/16free-hand
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    System and method for creating purportionately accurate figures
    • Patent number 7,926,188
    • Issue date Apr 19, 2011
    • Gregg B. Thorkelson
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Viewfinder for artists
    • Patent number 7,401,410
    • Issue date Jul 22, 2008
    • Russell P. Jewell
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Composition transfer proportional drawing grids
    • Patent number 7,389,589
    • Issue date Jun 24, 2008
    • Cindy Debold
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Right perspective drawing tool
    • Patent number 6,951,061
    • Issue date Oct 4, 2005
    • Elizabeth Rosetti
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Adjustable viewing frame
    • Patent number 6,769,190
    • Issue date Aug 3, 2004
    • David Tyrrell Carlisle
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Artist's freehand sketching device
    • Patent number 4,379,364
    • Issue date Apr 12, 1983
    • Ivan L. Fish
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Magnified graphical copier
    • Patent number 4,259,784
    • Issue date Apr 7, 1981
    • Ruth B. MacPherson
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drawing apparatus
    • Patent number 4,008,528
    • Issue date Feb 22, 1977
    • Richard A. Caulfield
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Graphic reproduction apparatus
    • Patent number 4,001,941
    • Issue date Jan 11, 1977
    • Gustavo Joel Cruz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Tracing scope
    • Patent number 3,988,833
    • Issue date Nov 2, 1976
    • Robert Sparks
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Adjustable grid line device
    • Patent number 3,939,564
    • Issue date Feb 24, 1976
    • Sr.; Walter V. Slawinski
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3852889
    • Patent number 3,852,889
    • Issue date Dec 10, 1974
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3844049
    • Patent number 3,844,049
    • Issue date Oct 29, 1974
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3678589
    • Patent number 3,678,589
    • Issue date Jul 25, 1972
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3503129
    • Patent number 3,503,129
    • Issue date Mar 31, 1970
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3175296
    • Patent number 3,175,296
    • Issue date Mar 30, 1965
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3096587
    • Patent number 3,096,587
    • Issue date Jul 9, 1963
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3086296
    • Patent number 3,086,296
    • Issue date Apr 23, 1963
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3063162
    • Patent number 3,063,162
    • Issue date Nov 13, 1962
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3045363
    • Patent number 3,045,363
    • Issue date Jul 24, 1962
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2472148
    • Patent number 2,472,148
    • Issue date Jun 7, 1949
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2463163
    • Patent number 2,463,163
    • Issue date Mar 1, 1949
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2401105
    • Patent number 2,401,105
    • Issue date May 28, 1946
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2263101
    • Patent number 2,263,101
    • Issue date Nov 18, 1941
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2222297
    • Patent number 2,222,297
    • Issue date Nov 19, 1940
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2189371
    • Patent number 2,189,371
    • Issue date Feb 6, 1940
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1771903
    • Patent number 1,771,903
    • Issue date Jul 29, 1930
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1622229
    • Patent number 1,622,229
    • Issue date Mar 22, 1927
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1415833
    • Patent number 1,415,833
    • Issue date May 9, 1922
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1401591
    • Patent number 1,401,591
    • Issue date Dec 27, 1921
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents