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Priority to JP1975156017UpriorityCriticalpatent/JPS5427275Y2/ja
Priority to GB4481577Aprioritypatent/GB1506142A/en
Priority to DE19762617856prioritypatent/DE2617856C3/de
Publication of JPS5268689UpublicationCriticalpatent/JPS5268689U/ja
Application grantedgrantedCritical
Publication of JPS5427275Y2publicationCriticalpatent/JPS5427275Y2/ja
