Patents by Inventor Ronald E. Blackman

Ronald E. Blackman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Spark plug service unit
    Patent number: D250755
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: January 9, 1979
    Assignee: Champion Spark Plug Company
    Inventors: Lawrence R. Lentz, Ronald E. Blackman, Donald M. Potter