TREA

John G. R. Francis

Follow

Person

  • Manning, SC, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Perspective drawing machine
    • Patent number 4,899,454
    • Issue date Feb 13, 1990
    • Trig.o.metrics Corporation
    • John G. R. Francis
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Saw guide with cut location indicator
    • Patent number 4,843,728
    • Issue date Jul 4, 1989
    • Trigometrics, Inc.
    • John G. R. Francis
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Saw guide with cut location indicator
    • Patent number 4,607,434
    • Issue date Aug 26, 1986
    • John G. R. Francis
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR