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United States Utility Patents
5,073,880 - 5,073,889

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NumberTitle
5,073,880 Information recording/reproducing method and apparatus
5,073,881 Optical disc apparatus with rapid and stable accessing capability
5,073,882 Servo-controlled actuator with two-peak flux density distribution
5,073,883 Objective lens driving apparatus including parallalogram structure
5,073,884 Tracking apparatus having movable and stationary parts
5,073,885 Optical memory disc driving apparatus
5,073,886 Signal reproducing circuitry and signal reproducing method for optical disc player
5,073,887 Optical disk recording and reading system with directory data access mechanism
5,073,888 Optical pickup device
5,073,889 Optical disk case assembly



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