1
Wells Joel D, McClure George F, Freeman Lionel D, Endicott John R, Cunningham Marion L: Multiple zone communications system and method. Martin Marietta Corporation, Burns Doane Swecker Mathis, August 5, 1975: US3898390 (143 worldwide citation)

A method and system for more efficiently utilizing presently available and prospectively available two-way communication channels for communication between mobile telephones and either fixed telephones or mobile telephones. A large mobile telephone service area is divided into a plurality of smaller ...


2
Freeman Lionel D, Endicott John R, Cunningham Marion L: Systeme et methode de communications mobiles utilisant une zone de couverture directionnelle, Mobile communication system and method employing directional service area coverage. Harris Corporation, August 28, 1979: CA1061412

ABSTRACT OF THE DISCLOSURE A communication method and system for providing two-way radiocommunication links between fixed stations and mobile units, particularlysuitable for use in mobile telephone communications. A geographicalservice area is sectionalized through the use of omnidirectional anddire ...


3
Wells Joel D, Endicott John R, Cunningham Marion L, Freeman Lionel D, Mcclure George F: Systeme et methode de communication telephonique multi-zones, Multiple zone communications system and method. Harris Corporation, August 29, 1978: CA1037564

ABSTRACT OF THE DISCLOSUREA method and system for more efficiently utilizing presently availableand prospectively available two-way communication channels for communicationbetween mobile telephones and either fixed telephones or mobile telephones.A large mobile telephone service area is divided into ...