with toothed racks

Patents Grantslast 30 patents

  • Information Patent Grant

    Drawing board assembly

    • Patent number 5,956,856
    • Issue date Sep 28, 1999
    • Chiang-Wen Chen
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ruler for fixed-distance movement

    • Patent number 4,790,077
    • Issue date Dec 13, 1988
    • Sharp Kabushiki Kaisha
    • Hiroshi Tsujioka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Lettering template

    • Patent number 4,679,328
    • Issue date Jul 14, 1987
    • Michael Saad
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drafting machine

    • Patent number 4,559,715
    • Issue date Dec 24, 1985
    • Walter Weglin
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drafting machine

    • Patent number 4,438,569
    • Issue date Mar 27, 1984
    • Gillespie; Robert J.
    • Walter Weglin
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3714714

    • Patent number 3,714,714
    • Issue date Feb 6, 1973
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3386191

    • Patent number 3,386,191
    • Issue date Jun 4, 1968
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3193943

    • Patent number 3,193,943
    • Issue date Jul 13, 1965
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3106783

    • Patent number 3,106,783
    • Issue date Oct 15, 1963
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3067517

    • Patent number 3,067,517
    • Issue date Dec 11, 1962
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2901832

    • Patent number 2,901,832
    • Issue date Sep 1, 1959
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2861343

    • Patent number 2,861,343
    • Issue date Nov 25, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2825139

    • Patent number 2,825,139
    • Issue date Mar 4, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2804691

    • Patent number 2,804,691
    • Issue date Sep 3, 1957
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2701918

    • Patent number 2,701,918
    • Issue date Feb 15, 1955
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2577159

    • Patent number 2,577,159
    • Issue date Dec 4, 1951
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2568358

    • Patent number 2,568,358
    • Issue date Sep 18, 1951
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2515954

    • Patent number 2,515,954
    • Issue date Jul 18, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2225903

    • Patent number 2,225,903
    • Issue date Dec 24, 1940
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1787362

    • Patent number 1,787,362
    • Issue date Dec 30, 1930
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1511626

    • Patent number 1,511,626
    • Issue date Oct 14, 1924
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1464973

    • Patent number 1,464,973
    • Issue date Aug 14, 1923
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES