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Priority to JP1977011065UpriorityCriticalpatent/JPS5551175Y2/ja
Priority to US05/872,902prioritypatent/US4131245A/en
Publication of JPS53106492UpublicationCriticalpatent/JPS53106492U/ja
Application grantedgrantedCritical
Publication of JPS5551175Y2publicationCriticalpatent/JPS5551175Y2/ja