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Priority to JP11218975UpriorityCriticalpatent/JPS5226086U/ja
Priority to US05/713,037prioritypatent/US4072216A/en
Priority to GB33743/76Aprioritypatent/GB1563213A/en
Priority to DE2636442Aprioritypatent/DE2636442C3/de
Priority to IT7669023Aprioritypatent/IT1071404B/it
Publication of JPS5226086UpublicationCriticalpatent/JPS5226086U/ja