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Priority to JP1593972UpriorityCriticalpatent/JPS5037691Y2/ja
Priority to US00296835Aprioritypatent/US3852932A/en
Priority to DE2250314Aprioritypatent/DE2250314A1/de
Publication of JPS4893617UpublicationCriticalpatent/JPS4893617U/ja
Application grantedgrantedCritical
Publication of JPS5037691Y2publicationCriticalpatent/JPS5037691Y2/ja