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Priority to JP428679UpriorityCriticalpatent/JPS635341Y2/ja
Priority to US06/109,111prioritypatent/US4337379A/en
Publication of JPS55104893UpublicationCriticalpatent/JPS55104893U/ja
Application grantedgrantedCritical
Publication of JPS635341Y2publicationCriticalpatent/JPS635341Y2/ja