Patents by Inventor Sheldon Dale Roberts

Sheldon Dale Roberts 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).

  • Dental appliance holder
    Patent number: D457638
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: May 21, 2002
    Assignee: Align Technology, Inc.
    Inventors: Knute Palmer Alstad, Sheldon Dale Roberts, Ryan Walter Rindy, Keith Ryan Wolf