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Priority to JP1972067198UpriorityCriticalpatent/JPS513838Y2/ja
Priority to US366573Aprioritypatent/US3867774A/en
Priority to DE19732328704prioritypatent/DE2328704C3/de
Publication of JPS4926796UpublicationCriticalpatent/JPS4926796U/ja
Application grantedgrantedCritical
Publication of JPS513838Y2publicationCriticalpatent/JPS513838Y2/ja