Patents by Inventor Sonia Schiefer

Sonia Schiefer 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).

  • Trash receptacle
    Patent number: D536148
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: January 30, 2007
    Assignee: Landscape Forms, Inc.
    Inventors: Sonia Schiefer, Ana Maria Reza-Hadden