Patents by Inventor Frank S. Curtis

Frank S. Curtis 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).

  • Rat trap
    Patent number: D244773
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: June 21, 1977
    Inventor: Frank S. Curtis