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United States Utility Patents
5,268,890 - 5,268,899

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NumberTitle
5,268,890 Self-cleaning optical disc system
5,268,891 Optical recording/reproducing apparatus which reduces seek time by timing initiation of tracking control based upon characteristics of record medium vibrations relative to an optical pick-up head
5,268,892 Cover member for covering an optical system of an optical head device including a dust filter mounted in an off set air flow opening
5,268,893 Write power calibration utilizing least squares fit of read-back signals for moving media memory
5,268,894 Apparatus for reproducing information by delaying and attenuating a reproducing signal
5,268,895 Signaling message routing control using composite point code status
5,268,896 Communication switching element
5,268,897 Route switching system in communications network
5,268,898 Information transmission system between machine master and servo mechanism
5,268,899 Apparatus for generating pseudo-random numbers in a communication system, or other system involving a shared resource



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