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Priority to JP6144774UpriorityCriticalpatent/JPS5315564Y2/ja
Priority to US05/513,086prioritypatent/US3944309A/en
Publication of JPS50150524UpublicationCriticalpatent/JPS50150524U/ja
Application grantedgrantedCritical
Publication of JPS5315564Y2publicationCriticalpatent/JPS5315564Y2/ja