Patents by Inventor Frederick D. Hamilton

Frederick D. Hamilton 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).

  • Nail extractor
    Patent number: 4482131
    Abstract: A device for quickly removing nails from boards which includes an elongated rod adapted to drive a nail extractor head having a groove shaped to grip nails embedded in a board. The nails thus engaged by this device are then lifted free from the board by turning the extractor head.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: November 13, 1984
    Inventor: Frederick D. Hamilton