John R. Pierce

Person

  • Huntington Woods, MI, US

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    VARIABLE TAIL PIPE VALVE SYSTEM

    • Publication number 20180258825
    • Publication date Sep 13, 2018
    • GM GLOBAL TECHNOLOGY OPERATIONS LLC
    • Glenn Pietila
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES