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Priority to JP13886475UpriorityCriticalpatent/JPS5648947Y2/ja
Priority to GB25787/76Aprioritypatent/GB1554262A/en
Priority to US05/699,167prioritypatent/US4090820A/en
Priority to DE2628373Aprioritypatent/DE2628373C2/de
Publication of JPS5251504UpublicationCriticalpatent/JPS5251504U/ja
Application grantedgrantedCritical
Publication of JPS5648947Y2publicationCriticalpatent/JPS5648947Y2/ja