Patents by Inventor Christopher J. Zietkiewicz

Christopher J. Zietkiewicz 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).

  • Electronic monitoring system
    Patent number: 4736196
    Abstract: A system for monitoring the location of an individual is disclosed and includes a band to be strapped to the individual's wrist or ankle. A trigger, transmitter, and antenna are incorporated into the band. The trigger controls operation of the transmitter and activation is effected by a portable authority-retained control unit. The trigger deactivates the transmitter under predetermined conditions (such as removal of the band) and reactivation requires utilization of the control unit.
    Type: Grant
    Filed: November 18, 1986
    Date of Patent: April 5, 1988
    Assignee: Cost-Effective Monitoring Systems, Co.
    Inventors: Walter W. McMahon, Christopher J. Zietkiewicz