Patents by Inventor Porter T. Pickren

Porter T. Pickren 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).

  • Post hole digger
    Patent number: 6273482
    Abstract: The subject invention provides a post hole digger which facilitates the digging of deep uniform diameters post holes. The post hole digger accomplishes this by crossing the handles to close the shovel blades. This allows the handles to stay within the diameter of the hole opening, removing the need to increase the diameter of the hole opening as the depth of the hole is increased.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: August 14, 2001
    Inventor: Porter T. Pickren
  • Post hole digger
    Patent number: 6089632
    Abstract: The subject invention provides a post hole digger which facilitates the digging of deep uniform diameter post holes. Th post hole digger accomplishes this by crossing the handles to close the shovel blades. This allows the handles to stay within the diameter of the hole opening, removing the need to increase the diameter of the hole opening as the depth of the hole is increased.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: July 18, 2000
    Inventor: Porter T. Pickren