TREA

with stencils

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Industry

  • CPC
  • B43L11/043
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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

B43L11/043with stencils
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Structure of isometric ellipse scale
    • Patent number 5,065,523
    • Issue date Nov 19, 1991
    • Chieh-Tseng Chiang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Geometry template
    • Patent number 4,736,526
    • Issue date Apr 12, 1988
    • Eric Hsia
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3524257
    • Patent number 3,524,257
    • Issue date Aug 18, 1970
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3046660
    • Patent number 3,046,660
    • Issue date Jul 31, 1962
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2933818
    • Patent number 2,933,818
    • Issue date Apr 26, 1960
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2832138
    • Patent number 2,832,138
    • Issue date Apr 29, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2532353
    • Patent number 2,532,353
    • Issue date Dec 5, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2512492
    • Patent number 2,512,492
    • Issue date Jun 20, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2499935
    • Patent number 2,499,935
    • Issue date Mar 7, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2095943
    • Patent number 2,095,943
    • Issue date Oct 12, 1937
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents