Patent Inventor: George Gregory Gruse

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System for tracking end-user electronic content usage
Inventor: Gruse, et al. | Patent Number: 7962750

Multimedia player toolkit for electronic content delivery
Inventor: Gruse, et al. | Patent Number: 7206748

Secure electronic content management system
Inventor: Downs, et al. | Patent Number: 6574609

Multimedia player for an electronic content delivery system
Inventor: Hurtado, et al. | Patent Number: 6418421

Key management system for digital content player
Inventor: Gruse, et al. | Patent Number: 6398245

System for tracking end-user electronic content usage
Inventor: Gruse, et al. | Patent Number: 6389538

Electronic content delivery system
Inventor: Downs, et al. | Patent Number: 6226618

Method and system for recording in-progress broadcast programs
Inventor: Gruse, et al. | Patent Number: 6173112

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