1
Louis H M Jandrell: Communication system and method for determining the location of a transponder unit. Pinpoint Communications, Arnold White & Durkee, November 15, 1994: US05365516 (456 worldwide citation)

A multilaterating two-way message delivery system for mobile resource management provides efficient two-way radio data communication for multitudes of portable transponders using a single frequency in half-duplex communication. The system includes at least one transponder device which transmits and ...


2
Louis H M Jandrell: Communication system and method for determining the location of a transponder unit. Pinpoint Communications, Arnold White & Durkee, June 11, 1996: US05526357 (258 worldwide citation)

A multilaterating two-way message delivery system for mobile resource management provides efficient two-way radio data communication for multitudes of portable transponders using a single frequency in half-duplex communication. The system includes at least one transponder device which transmits and ...


3
Jandrell Louis H M: Communication system and method for determining the location of a transponder unit.. Pinpoint Communications, October 18, 1995: EP0677198-A1

A multilaterating two-way message delivery system for mobile resource management provides efficient two-way radio data communication for multitudes of portable transponders (22) using a single frequency in half-duplex communication. The system includes at least one transponder device (22) which tran ...


4
Jandrell Louis H M: Communication system and method for determining the location of a transponder unit. Pinpoint Communications, RUDISILL Stephen G, March 4, 1993: WO/1993/004453

A multilaterating two-way message delivery system for mobile resource management provides efficient two-way radio data communication for multitudes of portable transponders (22) using a single frequency in half-duplex communication. The system includes at least one transponder device (22) which tran ...