Patents by Inventor John J. Mammel

John J. Mammel 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).

  • Removable shift slide stabilizer
    Patent number: 5639058
    Abstract: What is disclosed herein is a removable shift slide stabilizer tool used in the repair and maintenance of inboard-outboard engines used on watercraft.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: June 17, 1997
    Inventor: John J. Mammel