Patents by Inventor Carl B. Langford

Carl B. Langford 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: D452757
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: January 1, 2002
    Inventor: Carl B. Langford
  • Patent number: D393782
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: April 28, 1998
    Assignee: Carl Langford
    Inventor: Carl B. Langford