1
Robert T Durst Jr, Kevin D Hunter: Method and system for preventing unauthorized use of software. Robert H Whisker, Melvin J Scolnick, David E Pitchenik, May 12, 1992: US05113518 (217 worldwide citation)

A technique is disclosed for preventing a computer program from being used by a computer system other than a designated system. The values of certain characteristics exhibited by the designated computer system first are stored, and then the values of those same characteristics exhibited by the compu ...


2
Durst Robert T Jr, Hunter Kevin D: Methode et systeme pour empecher lutilisation non autorisee dun logiciel, Method and system for preventing unauthorized use of software. Pitney Bowes, SIM & MCBURNEY, March 23, 1993: CA1315001

PATENT3339-2040 C-305 ABSTRACT OF THE DISCLOSURE A technique is disclosed for preventing a computerprogram from being used by a computer system other than adesignated system. The values of certain characteristicsexhibited by the designated computer system first arestored, and then the values of thos ...