Patents by Inventor Denis R. Bertuzzo

Denis R. Bertuzzo 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).

  • Housing for a central vacuum cleaner
    Patent number: D294187
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: February 9, 1988
    Assignee: Filter Queen Ltd.
    Inventor: Denis R. Bertuzzo