TREA

including protractors

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Industry

  • CPC
  • B43L13/144
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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

B43L13/144including protractors
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    3897633
    • Patent number 3,897,633
    • Issue date Aug 5, 1975
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2622326
    • Patent number 2,622,326
    • Issue date Dec 23, 1952
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2460713
    • Patent number 2,460,713
    • Issue date Feb 1, 1949
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2436392
    • Patent number 2,436,392
    • Issue date Feb 24, 1948
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1872578
    • Patent number 1,872,578
    • Issue date Aug 16, 1932
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1706229
    • Patent number 1,706,229
    • Issue date Mar 19, 1929
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES