Patents by Inventor William L. Fruehauf

William L. Fruehauf 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).

  • Patent number: 5175944
    Abstract: A device for displaying cyclically heating an article of clothing placed thereover to a temperature at which color-changeable ink imprinted on the clothing either changes color or becomes invisible. The preferred embodiment simulates an upper torso and is formed of transparent plastic panels to snugly receive a shirt thereover.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: January 5, 1993
    Inventor: William L. Fruehauf