Patents by Inventor Steven E. Betts

Steven E. Betts 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).

  • Method and apparatus for preventing return dial tone fraud in a cellular paystation
    Patent number: 5818916
    Abstract: A cellular paystation system has a transceiver, paystation and an interface. The cellular paystation system operates to prevent return dial tone fraud by providing from the interface a first dial tone to a calling party using the paystation when an off-hook condition is first detected at the paystation by the interface, and then preventing another dial tone from being provided to the calling party until an on-hook condition of the calling party is detected by the interface at the paystation.
    Type: Grant
    Filed: June 20, 1995
    Date of Patent: October 6, 1998
    Assignee: Technology Service Group
    Inventors: Allen W. Vogl, Thomas D. Young, Steven E. Betts, Scott G. Turner