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Priority to JP2794772UpriorityCriticalpatent/JPS5228955Y2/ja
Priority to US339018Aprioritypatent/US3927986A/en
Priority to FR7308503Aprioritypatent/FR2175210B3/fr
Publication of JPS48106171UpublicationCriticalpatent/JPS48106171U/ja
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Publication of JPS5228955Y2publicationCriticalpatent/JPS5228955Y2/ja