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Write once read many crystallographic optical recording
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Access and tracking device for an optical disc
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Composite material for magneto-optical recording, its preparation and its use.
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Access and follower control device for optical disk
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Optically-readable data medium and reading device for such a medium
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Control device for controlling an object at a given position.
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Improved access and control device for optical disk drives
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DEVICE FOR ACCESSING AND TRACKING TRACKS FOR OPTICAL DISCS.
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DISC PLAYER-RECORDER.
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