TREA

with cords or like flexible elements

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  • CPC
  • B43L11/045
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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 B43L11/00Non-circular-curve-drawing instruments

Current Industry

B43L11/045with cords or like flexible elements
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Thread ruler and a multi-function drafting instrument
    • Patent number 7,080,459
    • Issue date Jul 25, 2006
    • Ashfaq A. Khan
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ellipsograph
    • Patent number 6,308,426
    • Issue date Oct 30, 2001
    • Hyoun-Gyu Lim
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Irregular surface ellipsograph
    • Patent number 5,123,171
    • Issue date Jun 23, 1992
    • Charles F. Langston
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Apparatus for drawing an ellipse using a piece of string
    • Patent number 4,594,784
    • Issue date Jun 17, 1986
    • Mikio Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Device for drawing ellipses
    • Patent number 3,947,968
    • Issue date Apr 6, 1976
    • Danny Rosenheck
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3447243
    • Patent number 3,447,243
    • Issue date Jun 3, 1969
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3224098
    • Patent number 3,224,098
    • Issue date Dec 21, 1965
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2831251
    • Patent number 2,831,251
    • Issue date Apr 22, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2654952
    • Patent number 2,654,952
    • Issue date Oct 13, 1953
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2548039
    • Patent number 2,548,039
    • Issue date Apr 10, 1951
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2256011
    • Patent number 2,256,011
    • Issue date Sep 16, 1941
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2240719
    • Patent number 2,240,719
    • Issue date May 6, 1941
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2138414
    • Patent number 2,138,414
    • Issue date Nov 29, 1938
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1872505
    • Patent number 1,872,505
    • Issue date Aug 16, 1932
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1724738
    • Patent number 1,724,738
    • Issue date Aug 13, 1929
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1559079
    • Patent number 1,559,079
    • Issue date Oct 27, 1925
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1488641
    • Patent number 1,488,641
    • Issue date Apr 1, 1924
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1487044
    • Patent number 1,487,044
    • Issue date Mar 18, 1924
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1411493
    • Patent number 1,411,493
    • Issue date Apr 4, 1922
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1373056
    • Patent number 1,373,056
    • Issue date Mar 29, 1921
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1230994
    • Patent number 1,230,994
    • Issue date Jun 26, 1917
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1188900
    • Patent number 1,188,900
    • Issue date Jun 27, 1916
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1148122
    • Patent number 1,148,122
    • Issue date Jul 27, 1915
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1116549
    • Patent number 1,116,549
    • Issue date Nov 10, 1914
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1022969
    • Patent number 1,022,969
    • Issue date Apr 9, 1912
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    888709
    • Patent number 888,709
    • Issue date May 26, 1908
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    768997
    • Patent number 768,997
    • Issue date Aug 30, 1904
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    758314
    • Patent number 758,314
    • Issue date Apr 26, 1904
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    743490
    • Patent number 743,490
    • Issue date Nov 10, 1903
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    707580
    • Patent number 707,580
    • Issue date Aug 26, 1902
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES