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Priority to JP7018571UpriorityCriticalpatent/JPS5141470Y2/ja
Priority to GB3614072Aprioritypatent/GB1394721A/en
Priority to DE19722238554prioritypatent/DE2238554A1/de
Publication of JPS4827827UpublicationCriticalpatent/JPS4827827U/ja
Priority to US425222Aprioritypatent/US3869953A/en
Application grantedgrantedCritical
Publication of JPS5141470Y2publicationCriticalpatent/JPS5141470Y2/ja