Patents by Inventor Douglas Allan Schaefer

Douglas Allan Schaefer 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: D464804
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: October 29, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Jonathan Paul Brennan, Lester Charles Sporing, Douglas Allan Schaefer, John Edwin Clark