Robert A. Hoppe

Person

  • Bridgeport, MI, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Engine secondary air control valve

    • Patent number 3,942,321
    • Issue date Mar 9, 1976
    • General Motors Corporation
    • Dennis C. Eckhardt
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS