Richard E. Callahan

Person

  • Toledo, OH, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Glow plug control circuit

    • Patent number 4,307,689
    • Issue date Dec 29, 1981
    • Champion Spark Plug Company
    • Frank J. Raeske
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS