Patents by Inventor Frederick Fierthaler

Frederick Fierthaler 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).

  • Cabinet for storage of video cassettes
    Patent number: 5145245
    Abstract: A video cassette storage cabinet has both rotating and slidable storage units to provide access to interior storage pockets in the internal cabinet shelving. The doors of the cabinet can be only partially opened to provide access to the interior.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: September 8, 1992
    Inventor: Frederick Fierthaler
  • Tomato knife
    Patent number: 5081770
    Abstract: The invention features a knife for use with fruits and vegetables. The blade of the knife has a single serration along a curved cutting edge, which allows the blade to pierce and cut through a tough rind or skin of a fruit, while preventing the tearing of the soft, inner pulp.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: January 21, 1992
    Inventor: Frederick Fierthaler
  • Thermally insulated beverage mug
    Patent number: 4984707
    Abstract: The invention features a thermally insulated beverage mug having a hollow internal walled section for retarding thermal conductivity between inner and outer vessel walls. The beverage mug also features a hinge mechanism and domed lid for closing the mouth of the vessel when the vessel is not in use.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: January 15, 1991
    Inventor: Frederick Fierthaler