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Priority to JP1980105597UpriorityCriticalpatent/JPS6134759Y2/ja
Priority to US06/286,922prioritypatent/US4433588A/en
Publication of JPS5728917UpublicationCriticalpatent/JPS5728917U/ja
Application grantedgrantedCritical
Publication of JPS6134759Y2publicationCriticalpatent/JPS6134759Y2/ja