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Priority to JP1974023133UpriorityCriticalpatent/JPS5518035Y2/ja
Priority to US05/451,737prioritypatent/US3944163A/en
Publication of JPS50114022UpublicationCriticalpatent/JPS50114022U/ja
Application grantedgrantedCritical
Publication of JPS5518035Y2publicationCriticalpatent/JPS5518035Y2/ja