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Priority to JP5610975UpriorityCriticalpatent/JPS5754071Y2/ja
Priority to DE19762617733prioritypatent/DE2617733A1/de
Priority to GB1658976Aprioritypatent/GB1503434A/en
Publication of JPS51136177UpublicationCriticalpatent/JPS51136177U/ja
Application grantedgrantedCritical
Publication of JPS5754071Y2publicationCriticalpatent/JPS5754071Y2/ja