Patents by Inventor David R. Fields

David R. Fields 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: D351271
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: October 11, 1994
    Inventor: David R. Fields