Patents by Inventor Frank S. Tkac

Frank S. Tkac 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).

  • Clock with selective visual alarm indicators
    Patent number: 4373822
    Abstract: A novelty alarm clock that incorporates an illumination system that selectively lights portions of the clock face, at least a portion of the illumination system being governed by the alarm-setting mechanism of the clock which can also include an aural alarm that gives a desired message.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: February 15, 1983
    Inventor: Frank S. Tkac
  • Combined alarm clock face and hands
    Patent number: D260379
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: August 25, 1981
    Inventor: Frank S. Tkac