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Priority to JP1602772UpriorityCriticalpatent/JPS5227470Y2/ja
Priority to GB621873Aprioritypatent/GB1416592A/en
Priority to DE19732306224prioritypatent/DE2306224A1/de
Publication of JPS4892625UpublicationCriticalpatent/JPS4892625U/ja
Application grantedgrantedCritical
Publication of JPS5227470Y2publicationCriticalpatent/JPS5227470Y2/ja