TREA

Douglas L. Sprung

Follow

Person

  • Camano Island, WA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Mobile pipe mill
    • Patent number 4,651,914
    • Issue date Mar 24, 1987
    • Pipemakers, Inc.
    • Douglas L. Sprung
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Mobile pipe mill
    • Patent number 4,651,915
    • Issue date Mar 24, 1987
    • Pipemakers, Inc.
    • Douglas L. Sprung
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR