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Priority to JP246673UpriorityCriticalpatent/JPS5248482Y2/ja
Priority to US427615Aprioritypatent/US3895666A/en
Priority to DE2364804Aprioritypatent/DE2364804A1/de
Publication of JPS49102403UpublicationCriticalpatent/JPS49102403U/ja
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Publication of JPS5248482Y2publicationCriticalpatent/JPS5248482Y2/ja