Patents by Inventor David W. Key

David W. Key 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).

  • Paint can lid
    Patent number: D445684
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: July 31, 2001
    Inventor: David W. Key
  • Paint can lid
    Patent number: D484050
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: December 23, 2003
    Inventor: David W. Key