TREA

with rollers or carriages

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Industry

  • CPC
  • B43L9/005
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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 B43L9/00Circular curve-drawing or like instruments

Current Industry

B43L9/005with rollers or carriages
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Centerless drafting tool
    • Patent number 11,999,186
    • Issue date Jun 4, 2024
    • Glen Kalen
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Educational ruler
    • Patent number 9,897,427
    • Issue date Feb 20, 2018
    • Zhi Shang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    System and a method for drawing arcs and circle
    • Patent number 9,457,612
    • Issue date Oct 4, 2016
    • Farhad Ghorbanloo
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    System and a method for drawing arcs and circle
    • Patent number 9,308,771
    • Issue date Apr 12, 2016
    • Farhad Ghorbanloo
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Wheeled compass
    • Patent number 9,073,381
    • Issue date Jul 7, 2015
    • King Saud University
    • Mohamed Yossry Elmassry
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Combined set of interacting instruments
    • Patent number 8,371,035
    • Issue date Feb 12, 2013
    • Mohammed Marzouq Khalaf Al-Mutairi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drafting instrument
    • Patent number 4,899,449
    • Issue date Feb 13, 1990
    • Simon Fouladian
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drawing machine
    • Patent number 4,670,991
    • Issue date Jun 9, 1987
    • McKay; Robert S.
    • Robert S. McKay
    • 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

    Adjustable compass device
    • Patent number 4,175,330
    • Issue date Nov 27, 1979
    • Wayne D. Hermann
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2958132
    • Patent number 2,958,132
    • Issue date Nov 1, 1960
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2749619
    • Patent number 2,749,619
    • Issue date Jun 12, 1956
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2624117
    • Patent number 2,624,117
    • Issue date Jan 6, 1953
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1422925
    • Patent number 1,422,925
    • Issue date Jul 18, 1922
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    CENTERLESS COMPASS
    • Publication number 20230256770
    • Publication date Aug 17, 2023
    • Glen Kalen
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    SYSTEM AND A METHOD FOR DRAWING ARCS AND CIRCLE
    • Publication number 20160185153
    • Publication date Jun 30, 2016
    • Farhad Ghorbanloo
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    SYSTEM AND A METHOD FOR DRAWING ARCS AND CIRCLE
    • Publication number 20160023502
    • Publication date Jan 28, 2016
    • Farhad Ghorbanloo
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    COMBINED SET OF INTERACTING INSTRUMENTS
    • Publication number 20120079729
    • Publication date Apr 5, 2012
    • Mohammed Marzouq Khalaf Al-Mutairi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES