1
Leonard Schuchman, Ronald C Bruno, John Kefaliotis, Steve Greenberg, Edward J Zakrzewski: Air traffic surveillance and communication system. Stanford Telecommunications, Jim Zegeer, October 17, 1995: US05459469 (99 worldwide citation)

An air traffic surveillance and communication system for air traffic controllers, includes a plurality of ground based first radio transceivers located in specific geographic sectors, respectively, and having a first frequency channel for supporting party-line digital voice and a second frequency ch ...


2
Leonard Schuchman, Ronald Bruno, John Kefaliotis, Steve Greenberg, Edward J Zakrzewski: Air traffic surveillance and communication system. Stanford Telecommunications, Jim Zegeer Esq, August 25, 1998: US05798726 (45 worldwide citation)

Air traffic surveillance and communication system for air traffic controllers includes a plurality of ground based first digital radio transceivers, each first digital radio transceiver being located in specific geographic sectors, respectively, and having a first frequency channel for supporting pa ...


3
Leonard Schuchman, Ronald Bruno, John Kefaliotis: Air traffic surveillance and communication system. Stanford Telecommunications, JIAN WEI, March 12, 1997: CN95192444

An air traffic surveillance and communication system for air traffic controllers, includes a plurality of ground based first digital radio transceivers located in specific geographic sectors, respectively, and having a first frequency channel for supporting party-line digital voice and a second freq ...