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Priority to JP1443072UpriorityCriticalpatent/JPS4937597Y2/ja
Priority to GB513073Aprioritypatent/GB1369176A/en
Priority to US328638Aprioritypatent/US3867952A/en
Publication of JPS4890986UpublicationCriticalpatent/JPS4890986U/ja
Application grantedgrantedCritical
Publication of JPS4937597Y2publicationCriticalpatent/JPS4937597Y2/ja