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A SYSTEM FOR CONTROLLING AND ENFORCING PLAYBACK RESTRICTIONS FOR A MEDIA FILE BY SPLITTING THE MEDIA FILE INTO USABLE AND UNUSABLE PORTIONS FOR PLAYBACK

11/117,620 | U.S. Patent Application

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Location ELECTRONIC
Filed April 28, 2005
Examiner LE HIEN LUU
Class 709
Art Group 2141
Patent No. 7,315,899
Case Type Utility - 709/232000
Status Patented Case
Parent 10/291,210 Patented
Parent 09/846,823 Patented
Parent 60/201,622 Expired
Child 11/932,648 Patented
Last Updated: 6 years, 3 months ago
Date # Transaction