TREA

for drawing conic sections

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  • CPC
  • B43L11/02
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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

B43L11/02for drawing conic sections
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Drawing apparatus
    • Patent number 7,546,686
    • Issue date Jun 16, 2009
    • Genie Toys PLC
    • Casey William Norman
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Scribing device and method
    • Patent number 4,635,369
    • Issue date Jan 13, 1987
    • Tommie L. Powell
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3927477
    • Patent number 3,927,477
    • Issue date Dec 23, 1975
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3624912
    • Patent number 3,624,912
    • Issue date Dec 7, 1971
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3486233
    • Patent number 3,486,233
    • Issue date Dec 30, 1969
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3311981
    • Patent number 3,311,981
    • Issue date Apr 4, 1967
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2881522
    • Patent number 2,881,522
    • Issue date Apr 14, 1959
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2703454
    • Patent number 2,703,454
    • Issue date Mar 8, 1955
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2700221
    • Patent number 2,700,221
    • Issue date Jan 25, 1955
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2694926
    • Patent number 2,694,926
    • Issue date Nov 23, 1954
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2669022
    • Patent number 2,669,022
    • Issue date Feb 16, 1954
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2660790
    • Patent number 2,660,790
    • Issue date Dec 1, 1953
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2557999
    • Patent number 2,557,999
    • Issue date Jun 26, 1951
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2385827
    • Patent number 2,385,827
    • Issue date Oct 2, 1945
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1743024
    • Patent number 1,743,024
    • Issue date Jan 7, 1930
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    DRAWING APPARATUS
    • Publication number 20090139099
    • Publication date Jun 4, 2009
    • Casey William Norman
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES