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Priority to JP1976038767UpriorityCriticalpatent/JPS5619810Y2/ja
Priority to US05/778,364prioritypatent/US4074025A/en
Publication of JPS52129926UpublicationCriticalpatent/JPS52129926U/ja
Application grantedgrantedCritical
Publication of JPS5619810Y2publicationCriticalpatent/JPS5619810Y2/ja