Patents by Inventor Frank Theodore Didik

Frank Theodore Didik 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).

  • Electrified cover safeguard
    Patent number: 7283055
    Abstract: A warning device that turns on a warning light and or a warning sound to indicate when a manhole cover or a service box cover or a metal pole for lights, traffic lights, transformers or others has become dangerously electrically charged. The invention is attached to the frame of a manhole cover, or a service box cover or a metal pole. The light and sound warns people to stay off the covers and their surrounding areas, and the surrounding areas of the metal poles.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: October 16, 2007
    Inventor: Frank Theodore Didik