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United States Utility Patents
5,018,120 - 5,018,129

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NumberTitle
5,018,120 Optical recording medium track indexing system
5,018,121 Optical recording/reproducing focusing apparatus
5,018,122 Linear motor actuator for moving an optical read/write head
5,018,123 Optical information recording medium and method for recording information on said medium and reproducing information therefrom
5,018,124 Information recording method and apparatus for recording information on track positioned at least two tracks ahead when abnormality of tracking servo is detected
5,018,125 Signal processing circuit for detecting a tracking error for an optical disk apparatus
5,018,126 Checking media operations and recording during optical recording
5,018,127 Light emitting apparatus having a plurality of light emitting points
5,018,128 Apparatus and medium for recording erasable information
5,018,129 Dual rail dilated switching networks



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