Patents by Inventor Tom S. Severson

Tom S. Severson 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).

  • Screwdriver
    Patent number: D307236
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: April 17, 1990
    Assignee: Snap-on Tools Corporation
    Inventors: Steven S. Cascio, Donald J. Caldwell, Tom S. Severson, Steven R. Wente, Mark S. Bakula
  • Screwdriver
    Patent number: D309246
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: July 17, 1990
    Assignee: Snap-on Tools Corporation
    Inventors: Steven S. Cascio, Donald J. Caldwell, Tom S. Severson, Steven R. Wente, Mark S. Bakula