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Priority to JP1509672UpriorityCriticalpatent/JPS5228115Y2/ja
Priority to US00327389Aprioritypatent/US3820004A/en
Publication of JPS4890130UpublicationCriticalpatent/JPS4890130U/ja
Application grantedgrantedCritical
Publication of JPS5228115Y2publicationCriticalpatent/JPS5228115Y2/ja