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Priority to JP3278876UpriorityCriticalpatent/JPS52124648U/ja
Priority to US05/778,217prioritypatent/US4103258A/en
Priority to FR7707981Aprioritypatent/FR2345004A1/fr
Priority to DE2711986Aprioritypatent/DE2711986C3/de
Priority to GB11683/77Aprioritypatent/GB1581732A/en
Publication of JPS52124648UpublicationCriticalpatent/JPS52124648U/ja