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Priority to JP1976062107UpriorityCriticalpatent/JPS5548104Y2/ja
Priority to GB16392/77Aprioritypatent/GB1521957A/en
Priority to FR7712447Aprioritypatent/FR2349033A1/fr
Publication of JPS52152905UpublicationCriticalpatent/JPS52152905U/ja
Priority to US06/005,012prioritypatent/US4224918A/en
Application grantedgrantedCritical
Publication of JPS5548104Y2publicationCriticalpatent/JPS5548104Y2/ja