Patents by Inventor Carl R. Hansen

Carl R. Hansen 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).

  • Plug with indicator light
    Patent number: D367261
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: February 20, 1996
    Inventor: Carl R. Hansen