Patents by Inventor John M. Griffith

John M. Griffith 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).

  • Combustion chamber scavenging system
    Patent number: 4383503
    Abstract: A two cycle engine having piston controlled inlet and exhaust ports is provided with a secondary one-way valved air fuel mixture passage to the combustion chamber adjacent the spark plug.
    Type: Grant
    Filed: June 12, 1981
    Date of Patent: May 17, 1983
    Assignee: Brunswick Corporation
    Inventor: John M. Griffiths