Patents by Inventor David Joseph Thum

David Joseph Thum 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: 6829864
    Abstract: A hinged protective cover for protecting a door threshold during construction or modification of a building or its contents. The cover is attached to a horizontal surface such as a building floor and covers the door threshold to prevent damage from foot traffic, contaminants and grit materials which may become lodged in the threshold. The hinge allows positioning of the protective cover to permit door closure while remaining attached to the floor. This leaves the cover in place for repositioning to the protecting position when the door is reopened and serves as an affirmative reminder to accomplish same.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: December 14, 2004
    Inventors: John Robert Mitchell, David Joseph Thum