Douglas B. Firestone

Person

  • Santee, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary vane pump

    • Patent number 5,616,020
    • Issue date Apr 1, 1997
    • Quik Pump, Inc.
    • Douglas B. Firestone
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Pipe repair assembly

    • Patent number 4,889,370
    • Issue date Dec 26, 1989
    • Douglas B. Firestone
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...