Patents by Inventor Keith W. Kaczmarek

Keith W. Kaczmarek 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).

  • Rural radiotelephone system
    Patent number: 4972456
    Abstract: A remote coverage system extends the effective coverage area of a cellular mobile radiotelecommunications (CMR) master cell. When a mobile unit assigned to the master cell moves from the master cell's coverage area into the coverage area of a satellite cell, the satellite cell sends a signal asking for a handoff of the mobile unit to it. When the handoff occurs, the MTSO exchanges signals with the mobile unit via a relay unit located at the master cell site. The relay unit relays signals between the MTSO and the satellite cell.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: November 20, 1990
    Assignee: GTE Mobilnet Incorporated
    Inventors: Keith W. Kaczmarek, Harold G. Saroka