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Priority to JP1977034652UpriorityCriticalpatent/JPS5822291Y2/ja
Priority to GB11102/78Aprioritypatent/GB1602533A/en
Publication of JPS53129304UpublicationCriticalpatent/JPS53129304U/ja
Priority to US05/967,570prioritypatent/US4234194A/en
Application grantedgrantedCritical
Publication of JPS5822291Y2publicationCriticalpatent/JPS5822291Y2/ja