Evan R. Johnson

Person

  • San Diego, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Valve assembly having remotely replaceable bearings

    • Patent number 4,204,558
    • Issue date May 27, 1980
    • The United States of America as represented by the United States Department o...
    • Evan R. Johnson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...