TREA

Mathematical drawing instruments

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  • CPC
  • B43L13/001
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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

B43L13/001Mathematical drawing instruments
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Plotter apparatus and methods for drawing a polygon inscribed withi...
    • Patent number 10,272,716
    • Issue date Apr 30, 2019
    • Hojjatollah Salimi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Measuring and/or plotting and/or sighting instrument
    • Patent number 9,250,072
    • Issue date Feb 2, 2016
    • Robert Lévy
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Multi-purpose mathematical drawing templates system
    • Patent number 9,067,459
    • Issue date Jun 30, 2015
    • Brendan Bennet
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Universal measuring apparatus and associated methods
    • Patent number 7,426,789
    • Issue date Sep 23, 2008
    • Engineered Devices & Solutions, LLC
    • Andrew Patrick Kraus
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Adjustable golden section indicator and method for loci transfer
    • Patent number 7,310,884
    • Issue date Dec 25, 2007
    • Charles Fleischer
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Method and apparatus for locating the center of a circle
    • Patent number 7,191,537
    • Issue date Mar 20, 2007
    • Andrew Patrick Kraus
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Draftsman's dimensional divider
    • Patent number 4,599,802
    • Issue date Jul 15, 1986
    • Walter L. Keller
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drafting instrument
    • Patent number 4,222,171
    • Issue date Sep 16, 1980
    • Joseph J. Malacheski
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3555950
    • Patent number 3,555,950
    • Issue date Jan 19, 1971
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3280461
    • Patent number 3,280,461
    • Issue date Oct 25, 1966
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3266153
    • Patent number 3,266,153
    • Issue date Aug 16, 1966
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3238625
    • Patent number 3,238,625
    • Issue date Mar 8, 1966
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3222984
    • Patent number 3,222,984
    • Issue date Dec 14, 1965
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3118233
    • Patent number 3,118,233
    • Issue date Jan 21, 1964
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3094783
    • Patent number 3,094,783
    • Issue date Jun 25, 1963
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3018552
    • Patent number 3,018,552
    • Issue date Jan 30, 1962
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3008046
    • Patent number 3,008,046
    • Issue date Nov 7, 1961
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2993277
    • Patent number 2,993,277
    • Issue date Jul 25, 1961
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2961772
    • Patent number 2,961,772
    • Issue date Nov 29, 1960
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2960771
    • Patent number 2,960,771
    • Issue date Nov 22, 1960
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2928178
    • Patent number 2,928,178
    • Issue date Mar 15, 1960
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2928177
    • Patent number 2,928,177
    • Issue date Mar 15, 1960
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2909843
    • Patent number 2,909,843
    • Issue date Oct 27, 1959
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2877950
    • Patent number 2,877,950
    • Issue date Mar 17, 1959
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2846143
    • Patent number 2,846,143
    • Issue date Aug 5, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2658672
    • Patent number 2,658,672
    • Issue date Nov 10, 1953
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2636271
    • Patent number 2,636,271
    • Issue date Apr 28, 1953
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2625740
    • Patent number 2,625,740
    • Issue date Jan 20, 1953
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2593914
    • Patent number 2,593,914
    • Issue date Apr 22, 1952
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2557944
    • Patent number 2,557,944
    • Issue date Jun 26, 1951
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents