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Priority to JP5748272UpriorityCriticalpatent/JPS526511Y2/ja
Publication of JPS4917660UpublicationCriticalpatent/JPS4917660U/ja
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Publication of JPS526511Y2publicationCriticalpatent/JPS526511Y2/ja
Device for recording information in symbolic format on photosensitive material by optical beam means and optical beam oscillograph applying same device