Patents by Inventor Dennis De Rosa

Dennis De Rosa 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).

  • Drawer file cabinet
    Patent number: 4290658
    Abstract: A file cabinet and drawer each formed from a single sheet of cardboard, fiberboard, or like material with the file cabinet being formed to provide a housing for the drawer. The drawer being so formed as to have multiple layered front and rear walls and doubled panelled side walls with one of said panelled side walls providing an interior file carrier support.
    Type: Grant
    Filed: September 21, 1979
    Date of Patent: September 22, 1981
    Inventor: Dennis De Rosa