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Patent applications and USPTO patent grants for Hsu; Michael M..The latest application filed is for "expiring content on playback devices".
Patent | Date |
---|---|
Secure ticketing Grant 6,947,910 - Hsu , et al. September 20, 2 | 2005-09-20 |
Secure ticketing App 20030069904 - Hsu, Michael M. ;   et al. | 2003-04-10 |
Expiring content on playback devices App 20030069854 - Hsu, Michael M. ;   et al. | 2003-04-10 |
Secure music delivery App 20030014630 - Spencer, Donald J. ;   et al. | 2003-01-16 |
Closed-loop delivery system App 20030014496 - Spencer, Donald J. ;   et al. | 2003-01-16 |
Closed-loop delivery to integrated download manager App 20030014436 - Spencer, Donald J. ;   et al. | 2003-01-16 |
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