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Priority to JP1972043918UpriorityCriticalpatent/JPS572970Y2/ja
Priority to DE2236660Aprioritypatent/DE2236660C3/de
Priority to US00275698Aprioritypatent/US3815148A/en
Publication of JPS495431UpublicationCriticalpatent/JPS495431U/ja
Application grantedgrantedCritical
Publication of JPS572970Y2publicationCriticalpatent/JPS572970Y2/ja