Patents by Inventor Donald Casterline

Donald Casterline 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).

  • Padlock with security seal
    Publication number: 20070262594
    Abstract: A padlock is provided with a disposable seal indicating whether the padlock has been opened. The seal can be provided with indicia identifying the last entity to seal the padlock, and so is useful for luggage security during travel.
    Type: Application
    Filed: May 5, 2006
    Publication date: November 15, 2007
    Inventors: Barry Hudson, Donald Casterline