Patents by Inventor Douglas C. Renzelman

Douglas C. Renzelman 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).

  • Paper towel dispenser
    Patent number: D724344
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: March 17, 2015
    Inventor: Douglas C. Renzelman