Frank H. Doyal II

Person

  • Raleigh, NC, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Composite piston

    • Patent number 4,306,489
    • Issue date Dec 22, 1981
    • Exxon Research and Engineering Co.
    • Howard D. Driver
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS