Patents by Inventor N. Grant Swaim

N. Grant Swaim 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).

  • Drain plug
    Patent number: D363767
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: October 31, 1995
    Inventor: N. Grant Swaim