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Priority to JP6164571UpriorityCriticalpatent/JPS5040055Y2/ja
Priority to DE19722230896prioritypatent/DE2230896C3/de
Priority to GB2975672Aprioritypatent/GB1383545A/en
Publication of JPS4820051UpublicationCriticalpatent/JPS4820051U/ja
Application grantedgrantedCritical
Publication of JPS5040055Y2publicationCriticalpatent/JPS5040055Y2/ja