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Priority to JP1977077831UpriorityCriticalpatent/JPS588588Y2/ja
Priority to DE19782825721prioritypatent/DE2825721C2/de
Priority to FR7817926Aprioritypatent/FR2394963A1/fr
Publication of JPS546017UpublicationCriticalpatent/JPS546017U/ja
Application grantedgrantedCritical
Publication of JPS588588Y2publicationCriticalpatent/JPS588588Y2/ja