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Priority to JP1985144564UpriorityCriticalpatent/JPH049620Y2/ja
Priority to US06/907,867prioritypatent/US4800773A/en
Priority to GB8622587Aprioritypatent/GB2180907B/en
Publication of JPS6252030UpublicationCriticalpatent/JPS6252030U/ja
Application grantedgrantedCritical
Publication of JPH049620Y2publicationCriticalpatent/JPH049620Y2/ja