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OPTICAL PICKUP COMPATIBLE WITH A DIGITAL VERSATILE DISK AND A RECORDABLE COMPACT DISK USING A HOLOGRAPHIC RING LENS

09/930,963 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)
Filed Aug. 17, 2001
Examiner MUHAMMAD N EDUN
Class 369
Art Group 2655
Patent No. 6,816,449
Case Type Utility - 369/112080
Status Patented Case
Parent 09/419,792 Patented
Parent 09/49,988 Patented
Child 97-11297
Last Updated: 4 years, 2 months ago
Date # Transaction